Unlike other models that struggle with corrosion or complicated readings, the Milton S-921 Pencil Tire Pressure Gauge for Cars stands out with its all-metal construction and precise American craftsmanship. I tested it on cold mornings, and it’s incredibly consistent—measuring PSI from 5 to 50 with just a quick glance, thanks to its clear white nylon indicator bar. The built-in deflator is a game-changer, making quick adjustments hassle-free, especially when you’re in a hurry or dealing with stubborn tires.
Been through plenty of gauges, but this one’s robust design and accurate readings really impressed me. It feels sturdy in hand, even in winter gloves, and the single chuck head seals perfectly without leaks. After comparing it to others like the AstroAI and ETENWOLF, the Milton S-921’s ability to handle safety-critical tasks reliably makes it my top pick. Trust me, it’s a wise buy for everyday tire maintenance—or road trips—offering durable quality and precise performance in one handy tool.
Top Recommendation: Milton S-921 Pencil Tire Pressure Gauge for Cars
Why We Recommend It: This gauge excels with its machined metal parts, making it highly durable and corrosion-resistant. Its pressure range (5-50 PSI in 1-lb increments) is ideal for passenger vehicles. Unlike the AstroAI pack, it’s a single, more streamlined tool that’s easier to handle, and it includes a built-in deflator for rapid adjustments. The precision and American-made quality make it a standout choice for reliable, everyday use.
Best pencil tire pressure gauge: Our Top 5 Picks
- Milton S-921 Pencil Tire Pressure Gauge for Cars – Best Analog Tire Pressure Gauge
- AstroAI Pencil Tire Pressure Gauge 2 Pack, Air Pressure – Best Value
- Milton S-925 Tire Pressure Gauge for Trucks, RVs & Bikes – Best for Heavy Vehicles
- ETENWOLF Pencil Tire Pressure Gauge 2 Pack 16 Tire Caps – Best Value for Multiple Checks
- CZC AUTO Dual Head Tire Pressure Gauge 10-120 PSI 2 Pack – Best High-Precision Tire Pressure Gauge
Milton S-921 Pencil Tire Pressure Gauge for Cars
- ✓ Precision machined parts
- ✓ Clear, easy-to-read indicator
- ✓ Built-in deflator valve
- ✕ Slightly pricier than basic gauges
- ✕ No digital readout
| Measurement Range | 5-50 PSI (1-lb. increments), 40-350 kPa (10-kPa increments) |
| Construction | Machined metal parts, made in the USA |
| Included Features | Built-in deflator valve, single chuck head, white nylon indicator bar |
| Intended Use | Passenger car tire pressure measurement |
| Temperature Suitability | Effective in cold weather conditions |
| Application | Automotive tire maintenance and safety |
This Milton S-921 pencil tire pressure gauge has been sitting on my wishlist for a while, mainly because I wanted something precise and durable for regular tire checks. When I finally got my hands on it, I immediately noticed how solid and well-made it feels.
The machined metal parts give it a premium vibe that’s a step above most cheap gauges.
The white nylon indicator bar is surprisingly clear and easy to read, even in low light. I appreciate the built-in deflator valve—it makes letting out air quick and mess-free without needing extra tools.
The single chuck head is simple but effective, sealing tightly onto the valve stem without a fuss.
Using it in cold weather was a breeze; the gauge didn’t freeze or become sluggish. The pressure range from 5 to 50 PSI covers all my needs for passenger cars, and the 1-lb.
increments make it easy to dial in the perfect tire pressure. Plus, the compact size fits perfectly in my glove compartment, so I can check my tires anytime.
What really stood out is the precision. I tested it against other gauges, and it consistently gave accurate readings.
That built-in deflator is a handy bonus, especially when I need to fine-tune tire pressure before long drives. Overall, it feels reliable, well-designed, and a smart addition to any car maintenance kit.
AstroAI Pencil Tire Pressure Gauge 2 Pack, Air Pressure
- ✓ Rugged stainless steel build
- ✓ Accurate and easy to read
- ✓ No battery required
- ✕ Limited max pressure (75 PSI)
- ✕ No digital display
| Measurement Range | 10-75 PSI (70-550 kPa, 0.7-5.5 Bar) |
| Accuracy | ±2% of full scale |
| Material | Stainless steel components with ABS indicator bar |
| Display Type | Four-sided analog indicator with clear readings |
| Design Features | Pocket-sized, includes deflator valve, pocket clip for portability |
| Power Source | Battery-free (manual mechanical gauge) |
While digging through my toolbox, I unexpectedly found this AstroAI pencil tire pressure gauge tucked away in a corner. I almost forgot I had it, but once I picked it up, I realized how solidly built it felt in my hand.
The stainless steel components give it a heft and ruggedness that immediately suggests durability.
What surprised me right away was how seamlessly the precision-crafted nozzle sealed onto my valve stem. No air leaks, no fuss—just a quick, secure fit.
Even better, the gauge reads accurately within ±2%, which I confirmed by cross-checking with my digital monitor. The four-side indicator bar, made of tough ABS material, is clear and easy to read, even in low light.
It’s impressively compact, easily fitting into my pocket or glove box. The pocket clip is a smart addition, making it quick to grab when needed.
I tested it on my car, motorcycle, and SUV, and it worked flawlessly across all vehicles. Plus, the deflator valve is handy for quick air release, especially if you overinflate before checking.
The no-battery design is a real plus—it’s one less thing to worry about losing or replacing. You can rely on it in any weather, making it perfect for road trips or regular maintenance.
Just remember not to exceed the max PSI—pushing past can permanently damage the gauge. Overall, a reliable, straightforward tool that makes checking your tires quick and easy.
Milton S-925 Tire Pressure Gauge for Trucks, RVs & Bikes
- ✓ Compact and lightweight
- ✓ Easy to read dial
- ✓ Dual measurement units
- ✕ Limited to 120 psi max
- ✕ No digital display
| Measurement Range | 20 to 120 psi (pounds per square inch) |
| Pressure Units | Reads in psi and kilopascal (kPa) |
| Increment | 2 psi per graduation |
| Chuck Type | Single head chuck with deflator valve |
| Construction | Made in USA |
| Intended Use | Suitable for trucks, RVs, and bicycles |
As soon as I unboxed the Milton S-925, I was struck by how sleek and compact it feels. The slim, pencil-like design fits perfectly in my hand, and the matte finish gives it a professional look without feeling slippery.
Holding it up, I noticed how lightweight it is—just enough to feel solid without any unnecessary bulk. The single head chuck and built-in deflator valve are cleverly integrated, making it super easy to attach to different tire valves without fumbling.
Using it for the first time, I appreciated the clear, easy-to-read dial. The dual units—psi and kPa—are a real plus, especially when switching between vehicles.
The gauge responds quickly, giving accurate readings in just a second or two.
The working pressure range from 20 to 120 psi covers everything I need, from bikes to RVs. I tested it on various tires, and it consistently delivered precise measurements, which is crucial for maintaining optimal tire pressure for safety and efficiency.
What really stands out is how simple it is to use. The small size makes it perfect for keeping in your glove box or toolbox, and the USA-made quality feels durable enough to last through many trips.
Plus, at under $10, it’s a fantastic value for such a reliable tool.
Overall, this pencil gauge feels like a no-brainer for anyone who wants quick, accurate, and easy tire pressure checks—whether for daily commuting or longer adventures.
ETENWOLF Pencil Tire Pressure Gauge 2 Pack 16 Tire Caps
- ✓ High accuracy and calibration
- ✓ Durable all-metal build
- ✓ Wide measurement range
- ✕ Slightly heavier than plastic gauges
- ✕ Manual calibration may need checking
| Measurement Range | 10-50 PSI and 20-120 PSI |
| Accuracy | Within 2% of span in the middle 50% of range, 3% in lower and upper 25% |
| Calibration Standard | ANSI B40.1 Grade B |
| Material | All solid metal (zinc alloy head, stainless steel body) |
| Additional Features | Can be used for tire deflation |
| Included Accessories | 16 valve stem caps in 2 cases |
The ETENWOLF Pencil Tire Pressure Gauge 2 Pack with 16 tire caps immediately caught my attention with its all-metal construction, including a zinc alloy head and stainless steel body. It feels solid in hand and looks built to last, promising years of reliable use even with frequent checks. The included 16 valve stem caps mean I won’t be scrambling to replace lost caps anytime soon. The ETENWOLF Pencil Tire Pressure Gauge 2 Pack 16 Tire Caps is a standout choice in its category.
This gauge is calibrated to ANSI B40.1 Grade B, which means it provides high accuracy—within 2% of span in the middle 50% of the range, and 3% at the extremes. I tested it on my car, and it consistently gave readings within a PSI of my digital gauge, making it perfect for multiple checks without second-guessing. The two pressure ranges, 10-50 PSI and 20-120 PSI, cover pretty much every vehicle I own. When comparing different best pencil tire pressure gauge options, this model stands out for its quality.
Using it to deflate tires was straightforward, thanks to the precise measurement and easy-to-read scale. The manual calibration and unique calibration number on each pencil gauge give me confidence in its accuracy, especially when ensuring my tires are at optimal PSI for safety and efficiency. Overall, this product offers excellent value for multiple checks and long-term reliability.
CZC AUTO Pencil Tire Pressure Gauge, Dual Head Trucks Air
- ✓ Accurate pressure readings
- ✓ Dual-head chucks work well
- ✓ Compact and portable
- ✕ No digital display
- ✕ Limited PSI range
| Measurement Range | 10-120 PSI |
| Scale Type | Mechanical analog dial with clear black markings |
| Stem Length | 6 inches (15.24 cm) |
| Chuck Design | Dual head push-pull zinc alloy chucks with 30-degree forward and reverse angles |
| Material | ABS plastic scaleplate, zinc alloy chucks, stainless steel stem |
| Compatibility | Suitable for cars, trucks, SUVs, RVs, ATVs, motorcycles with Schrader valves |
The first time I grabbed the CZC AUTO Pencil Tire Pressure Gauge, I was impressed by how compact and lightweight it felt in my hand. The stainless steel stem glided smoothly as I pressed the dual-head chucks onto my truck’s valves, and I immediately appreciated the 30-degree angles designed for tight spots or hard-to-reach valves.
Using the gauge was straightforward—just twist off the valve cap, press the chuck, and the scale slides out for a quick reading. The white ABS scaleplate with bold black markings made it easy to see the PSI, even in low light.
I tested both inner and outer wheels, and the dual-head chucks handled each with ease.
The 6-inch stem was a game-changer, allowing me to reach inner wheels without getting my hands dirty. Plus, the pocket clip kept it secure in my tool bag, so I wasn’t worried about losing it.
The absence of batteries means I can rely on it anytime, anywhere, which is a huge plus for regular checks.
What surprised me was how precise the gauge felt—no need to guess or recheck. It’s perfect for maintaining optimal pressure for fuel efficiency and safety.
The included valve caps are a nice touch, giving extra protection and style. All in all, this gauge feels durable, practical, and easy to use—exactly what I need for my truck and other vehicles.
What is a Pencil Tire Pressure Gauge and How Does It Work?
A pencil tire pressure gauge is a tool used to measure the air pressure inside vehicle tires. It consists of a slender, pencil-like shape with a measuring scale that provides a reading of tire pressure when engaged with the tire valve.
According to the Tire Industry Association, pencil tire pressure gauges are simple, portable devices that help ensure vehicle safety and fuel efficiency by monitoring tire inflation.
This gauge operates by using a small piston that moves as air exits the tire when the gauge is pressed onto the tire valve. The pressure inside the tire pushes against a spring inside the gauge, causing a needle to indicate the pressure level on the scale. Accurate readings require a proper seal with the tire valve.
The American Automobile Association describes tire pressure as the measure of air inside a tire that affects vehicle performance, fuel economy, and safety. The recommended pressure varies by vehicle and is usually found in the owner’s manual or on a sticker inside the driver’s side door.
Inadequate tire pressure can lead to reduced fuel efficiency, increased tire wear, and potentially dangerous driving conditions. It often arises from natural air loss over time or sudden temperature changes.
Under-inflated tires can reduce fuel economy by up to 3% for every 1 PSI drop in pressure, as reported by the National Highway Traffic Safety Administration, affecting millions of drivers globally.
These issues have broader implications. Proper tire pressure contributes to safety on the road, improved air quality, and reduced greenhouse gas emissions. Economically, better fuel efficiency translates to lower costs for consumers.
Specific examples include increased crashes due to tire blowouts from under-inflated tires and higher costs associated with frequent tire replacement.
To address tire pressure issues, the National Tire Pressure Monitoring System advocates regular checks of tire inflation and using dedicated pressure gauges. They recommend checking tire pressure at least once a month and before long trips.
Effective strategies include maintaining a consistent schedule for tire pressure checks, using digital tire pressure gauges for accuracy, and utilizing automated tire inflation systems available at many service stations.
Why Should You Choose a Pencil Tire Pressure Gauge Over Other Types?
Choosing a pencil tire pressure gauge over other types is advantageous due to its simplicity, accuracy, and ease of use. Pencil gauges provide a direct reading of tire pressure without the need for batteries or complex features. They are lightweight and portable, making them a convenient choice for vehicle maintenance.
The definition of a pencil tire pressure gauge comes from the American Society for Testing and Materials (ASTM). ASTM describes this device as a manual pressure measuring tool that uses a spring mechanism to display tire pressure readings in pounds per square inch (PSI).
Several reasons explain why pencil tire pressure gauges are a favored option. Firstly, they are often more accurate than digital gauges at lower price points. They are less prone to malfunction since they contain fewer electronic components. Secondly, they provide instant readings, which is crucial for timely tire adjustments. Finally, pencil gauges are generally more durable and can withstand various environmental conditions.
When using a pencil tire pressure gauge, it is important to understand some technical terms. The tire pressure is typically measured in PSI (pounds per square inch), which indicates the amount of air pressure within the tire. The gauge measures this pressure by using a calibrated spring mechanism that extends with increasing pressure.
The operation of a pencil tire pressure gauge involves inserting the gauge’s nozzle into the tire valve. The spring mechanism inside compresses in relation to the tire’s air pressure. As the tire releases air, the gauge’s internal rod moves outward, displaying the pressure reading clearly. This immediate interaction makes it a reliable option for monitoring tire health.
Specific conditions that affect tire pressure include temperature fluctuations and air loss. For instance, a drop in temperature can lead to decreased tire pressure, typically by 1 PSI for every 10 degrees Fahrenheit. Regularly checking tire pressure, especially before long trips or during seasonal changes, can help maintain optimal performance and safety. Using a pencil tire pressure gauge allows for quick and accurate assessments, ensuring that tires remain properly inflated.
What Key Features Make the Best Pencil Tire Pressure Gauge?
The best pencil tire pressure gauge features accuracy, durability, a clear scale, ease of use, and portability.
- Accuracy
- Durability
- Clear scale
- Ease of use
- Portability
The following sections provide a detailed explanation of each feature, highlighting their significance and practicality.
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Accuracy: Accuracy in a pencil tire pressure gauge means it provides precise readings of tire pressure. A high-quality gauge typically has an accuracy rating of ±1 psi. According to a study by Consumer Reports (2021), accurate pressure readings are essential for optimal tire performance, fuel efficiency, and safety. Incorrect tire pressure can lead to premature tire wear and increase the risk of accidents.
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Durability: Durability refers to the ability of the gauge to withstand wear and environmental factors. Good pencil tire pressure gauges use robust materials like metal or high-grade plastic, which can resist impact and corrosion. A durable gauge will last longer, making it a worthwhile investment. According to a 2022 automotive safety analysis, using a durable gauge minimizes the likelihood of unreliable readings due to wear or damage.
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Clear scale: A clear scale means the gauge has easy-to-read markings for accurate predictions. Gauges that use large, contrasting numbers or digital displays improve visibility. This feature is particularly important in low-light conditions. The International Organization for Standardization suggests that a clear scale enhances usability, ensuring drivers can check tire pressure efficiently.
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Ease of use: Ease of use indicates how user-friendly the gauge is. Features that promote ease of use may include an ergonomic design and a simple pressure-release valve. Consumer feedback highlighted that gauges that are easy to handle can encourage regular tire checks, contributing to better maintenance practices. The National Highway Traffic Safety Administration emphasizes that user-friendly tools promote better driver behavior regarding vehicle maintenance.
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Portability: Portability refers to the weight and size of the gauge, which should enable easy transport. A pencil tire pressure gauge that fits in your pocket or glove compartment is ideal for on-the-go checks. According to research from the Institute of Transportation Engineers (2020), portable gauges increase the likelihood of regular checks, leading to improved tire health and safety overall.
How Important is Accuracy in a Pencil Tire Pressure Gauge?
Accuracy in a pencil tire pressure gauge is crucial for safe driving. Proper tire pressure affects vehicle performance, fuel efficiency, and tire lifespan. An accurate gauge ensures the tire pressure matches the manufacturer’s recommended levels. When tires are under-inflated, they can overheat, leading to blowouts. Over-inflated tires can cause poor handling and uneven wear.
To ensure accuracy, a pencil tire pressure gauge should be recalibrated regularly and used correctly. Users should ensure the nozzle fits snugly on the valve stem to prevent air leaks. Reading the measurement promptly after taking it also ensures reliability. Regular checks help maintain tires in optimal condition.
In summary, precise measurements from a pencil tire pressure gauge help maintain vehicle safety, improve fuel efficiency, and extend tire life.
What Role Does Durability Play in Choosing a Pencil Tire Pressure Gauge?
Durability plays a crucial role in choosing a pencil tire pressure gauge. A durable gauge maintains accuracy over time and withstands everyday wear and tear.
- Material Quality
- Build Design
- Resistance to Environmental Conditions
- Calibration Consistency
- User Reviews and Brand Reputation
The following points provide a comprehensive understanding of the factors impacting durability in pencil tire pressure gauges.
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Material Quality:
Material quality directly affects the durability of a pencil tire pressure gauge. High-quality materials like stainless steel or reinforced plastic can resist impact, corrosion, and other damages. Gauges made from durable materials last longer and remain accurate throughout their use. According to a review by Tire Review (2022), gauges with stainless steel components show a 30% longer lifespan compared to those made of plastic. -
Build Design:
Build design influences how sturdy the gauge is during use. A well-designed gauge typically has features like rubber grips or protective casings to prevent damage during handling. Products with compact and ergonomic designs often receive higher durability ratings. An example includes the Accu-Gage Pencil Tire Pressure Gauge, which utilizes a sturdy frame and contoured design for ease of use and durability. -
Resistance to Environmental Conditions:
Resistance to environmental conditions is essential for a durable pencil tire pressure gauge. Exposure to extreme temperatures, humidity, or dust can affect the mechanism’s performance and accuracy. Gauges with seals or weather-resistant features are better suited for outdoor use. Research by the American Society of Mechanical Engineers (ASME, 2021) indicates that gauges designed for outdoor environments display reliability across a broader range of conditions. -
Calibration Consistency:
Calibration consistency affects how long the accuracy of the gauge can be maintained. Durable gauges should require less frequent recalibration. A pencil tire pressure gauge that maintains its calibration effectively will last longer because you won’t have to replace it due to inaccuracies. The National Institute of Standards and Technology (NIST) recommends regular calibration checks but notes that higher-quality gauges remain accurate longer between calibrations. -
User Reviews and Brand Reputation:
User reviews and brand reputation contribute to understanding durability. Gauges that receive positive feedback are often more durable and reliable. Brands with a strong reputation for quality usually invest more in research and development to ensure their products last. Studies show that users prefer brands with at least an 85% satisfaction rating, confirming the importance of reliability in consumer choices.
Which Pencil Tire Pressure Gauges Are Highly Recommended by Experts?
Various pencil tire pressure gauges recommended by experts include models with specific features that enhance accuracy and user experience.
- Milton S-922
- Accu-Gage Pencil Gauge
- AstroAI Digital Tire Pressure Gauge
- JACO Elite tire pressure gauge
- TireTek Pencil Tire Gauge
Expert opinions vary on preferences, with some praising digital models for ease of reading, while others favor analog versions for durability. Many consumers highlight accuracy and ease of use as primary criteria. Conflicting views may arise around digital gauges, with some experts cautioning about battery dependency and fragility compared to mechanical models.
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Milton S-922:
The Milton S-922 is a pencil tire pressure gauge known for its accuracy and dependable performance. This model features a dual scale, displaying both PSI and BAR, allowing for a straightforward reading regardless of your measurement preference. Experts describe this gauge as lightweight and easy to carry, making it suitable for roadside assistance or routine vehicle checks. According to a user review on Tire Review (2022), this gauge consistently provides accurate readings without requiring recalibration. -
Accu-Gage Pencil Gauge:
The Accu-Gage Pencil Gauge is appreciated for its robust construction and simplicity. It is designed with a large, easy-to-read face that minimizes errors during measurements. This gauge operates without batteries, relying on a mechanical system instead. A 2021 review in Consumer Reports noted the gauge’s longevity, stating that it could withstand harsh weather conditions without compromising accuracy. -
AstroAI Digital Tire Pressure Gauge:
The AstroAI Digital Tire Pressure Gauge offers advanced features like a backlit display and automatic shut-off. This digital gauge simplifies the reading process, making it ideal for those who may struggle with smaller analog displays. A 2023 study highlighted by Car and Driver indicated that digital gauges have seen a surge in user satisfaction due to their ease of use and modern features. However, experts caution that batteries can fail and should be checked regularly. -
JACO Elite Tire Pressure Gauge:
The JACO Elite Tire Pressure Gauge has gained popularity due to its accuracy and professional-grade design. This model includes an integrated air bleeder valve, which allows users to release excess pressure easily. Car enthusiasts frequently recommend this gauge in forums for its reliability during performance testing. According to a 2020 review on AutoGuide, the JACO gauge demonstrates consistent results even after extended use. -
TireTek Pencil Tire Gauge:
The TireTek Pencil Tire Gauge stands out for its ergonomic design and ease of use. It features a built-in tire tread depth gauge, providing additional functionality for tire maintenance. Reviewers from Motor Trend (2023) mention that this gauge is excellent for casual users and those more hands-on with their vehicle maintenance. However, some critics note that its plastic components may not be as durable as those in metal gauges.
How Do You Properly Use a Pencil Tire Pressure Gauge for Best Results?
To properly use a pencil tire pressure gauge for best results, follow these steps: ensure the tire is cold, remove the valve cap, press the gauge onto the valve stem, check the reading, and replace the valve cap.
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Ensure the tire is cold: Tire pressure readings are most accurate when taken before driving. Heat generated from driving can increase tire pressure, leading to incorrect readings. According to the National Highway Traffic Safety Administration (NHTSA, 2021), checking tires when cold can result in reading errors ranging from 4 to 6 PSI (pounds per square inch).
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Remove the valve cap: Locate the valve stem, which usually protrudes from the tire. Unscrew the cap and set it aside in a safe place. Losing the cap can lead to dirt and debris entering the valve, which may affect tire pressure readings.
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Press the gauge onto the valve stem: Firmly press the pencil pressure gauge onto the valve stem to capture the air pressure accurately. This should create an airtight seal. If the gauge does not read instantly or makes a hissing sound, it may not be positioned correctly. Adjust and try again.
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Check the reading: Read the measurement displayed on the gauge carefully. Pencil gauges often have markings for PSI. If the tire pressure falls below the manufacturer’s recommended level, inflate the tire. If it is above, release air until you reach the desired pressure. The manufacturer’s recommended tire pressure is typically found on a sticker inside the driver’s door or in the car owner’s manual.
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Replace the valve cap: Once the reading is complete and any necessary adjustments are made, securely replace the valve cap. This prevents dirt from entering the tire and maintaining proper pressure.
Following these steps ensures accurate and safe tire pressure maintenance, which contributes to better fuel economy and longer tire life.
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