LABEAR Nut and Bolt Size Gauge Keychain, Thread Checker & Identifier, SAE & Metric Fastener Measuring Tool 5/16″-1″ / 8–25mm, Pocket Socket & Wrench Size Finder for Automotive, Repair & DIY
Original price was: $49.99.$18.99Current price is: $18.99.
Price: $49.99 - $18.99
(as of Oct 22, 2025 20:41:42 UTC – Details)
From the brand
At Labear Tool, we seamlessly integrate advanced technology with exceptional craftsmanship to produce tools that exemplify durability and performance. Each product we manufacture reflects our steadfast dedication to quality and our passion for excellence. From workshops to job sites, Labear Tool is synonymous with tools that deliver unparalleled reliability and efficiency.
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Product Dimensions : 3.3 x 1.06 x 0.08 inches; 1.76 ounces
Date First Available : May 31, 2024
Manufacturer : LOH TORNG HARDWARE MACHINE CO., LTD.
ASIN : B0D5QXRWN7
Best Sellers Rank: #4,209 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #5 in Nut & Bolt Assortment Sets
Customer Reviews: 4.5 4.5 out of 5 stars 244 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
✅ Wide Range Measurement – Covers SAE 5/16″-1″ and Metric 8–25mm, making it easy to identify most standard nut and bolt sizes in both inch and millimeter.
🔧 Dual Markings for Accuracy – Clear SAE (inch) and Metric (mm) graduations are engraved on opposite sides, ensuring quick and error-free size identification.
⚙ Durable Alloy Steel Construction – Made of corrosion-resistant alloy steel for long-lasting strength, ideal for workshops, garages, and outdoor projects.
🔑 Portable Keychain Design – Lightweight and compact with a sturdy keychain clip, convenient to carry in your pocket, tool bag, or attach to keys for quick access.
🚗 Versatile for All Projects – Perfect for automotive repair, home improvement, construction, maintenance, and DIY tasks, saving time and improving work efficiency.
Customers say
Customers find the nut and bolt size gauge to be of good quality and appreciate how it saves time by eliminating trips to the toolbox. The tool accurately measures fasteners and works well for both SAE and metric measurements. While customers consider it worth the money, they note that it’s not perfectly accurate.
13 reviews for LABEAR Nut and Bolt Size Gauge Keychain, Thread Checker & Identifier, SAE & Metric Fastener Measuring Tool 5/16″-1″ / 8–25mm, Pocket Socket & Wrench Size Finder for Automotive, Repair & DIY
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Original price was: $49.99.$18.99Current price is: $18.99.
Big Andrew. –
Best pick.
This wonât break your budget or take up space in your tool box. Itâs clips easily to a key chain, pant belt loop, or tool bag. Compact size makes it easier to use that other gages. Functions in SAE and metric. The value of this gage pays for its self the first time you use it, money well spent.
Joseph L. –
Great tool
Exactly what you need for sizing. It doesn’t take a rocket scientist to figure it out. Very useful.
Kindle Customer –
Good tool
Great for nonprofessionals
John –
It’s great!
I almost didn’t buy the bolt head/nut sizer. I’m glad I treated myself to it.It’s sped up the disassembly of my OBS pickup by saving me tips to the tool box from grabbing the wrong sockets or wrenchs ð§ and working space from leaving the spares out. I’ll be buying some for some mechanic friends ð
Robin –
Great tool
Itâs a great tool. It saves time going back and forth to your tools to get the correct size.
David Allison –
Quality
Well made and love the pointer!
Matthew J. Terrano –
Good buy
Used the other day works great, but in time you learn the sizes on the job.
Carlos –
Extremely helpful
Extremely helpful, is not perfectly accurate but makes your projects easier, I really love it ,I have it from about six months and it’s on of my favorites tools.
Jorg-Volker Seibt –
based on the reviews provided by customers out of the US, they must receive a different product. I picked that higher-priced item hoping for a decent quality. The product I received was extremely flimsy, the slide with the indicator mark was loose and rotated making a reading impossible. When you you hold it in place the actual measurements did not come close to the right bolt or wrench size. At least I could return the item.
Rick Mortal –
Picked this one because it was more expensive, and had better reviews. Turns out it’s the same junk as the cheap ones with bad reviews.Don’t waist your time and money on this poorly engineered novelty toy. Thought it would be great to have on me all day for the variety of nuts and bolts I encounter. And it would be, if it actually worked.Buy a digital caliper for a few more bucks.
SV Agora –
Unfortunately not very accurate at larger sizes. Wanted it to work out but didnât.
Expert Auto Clinic –
Not even close to being accurate. What a waste of money.
Eric Garneau –
Very disapointed. Not accurate at all. Very cheap. Donât waste your money on that. I would put zero stars if i could.