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- Easily identify bolt sizes on-the-go.
- Small and compact size makes it easy to carry around anywhere.
- Effortlessly switch between Metric and SAE measurements
- Say goodbye to the days of test fitting sockets to find the right size.
Instant Bolt
Size Identification
Our Bolt Size Finder gauge lets you identify any bolt or nut size instantly, saving you time and effort. No more testing different sockets to find the right size; our tool makes the process simple and easy.
Measures Both
Metric and SAE Bolts
Our Bolt Size Finder measures both Metric (8 - 25 mm) and SAE (5/16 - 1") bolts, making it versatile and suitable for any job.With this tool, you won't have to worry about grabbing the wrong socket.
Portable and
Compact Keychain
Our Bolt Size Finder is portable and compact, making it easy to take with you on the go.Attach it to your keychain and you'll always have it on-hand when you need it.
Saves You
Time and Effort
Our Bolt Size Finder saves you time and effort by allowing you to quickly and easily identify bolt and nut sizes.No more wasted time trying to figure out which socket to use our tool does the work for you.
Why Buy From Us
Unrivaled Service
Talk to a real human for customer support within 30 business minutes or get your money back.
Limited Lifetime Warranty
All hand tools and tool organizers include a limited lifetime warranty that covers all manufacturer's defects.
90-Day Returns
Use our tools completely risk-free for 90 days and if you're not happy with them, get a full refund.
Satisfaction Guaranteed
We go above and beyond to to make your buying experience as easy & smooth as possible.
- Reviews
- Questions
CanadaSaves me so much time.
I constantly misjudge bolt size and have to go back to grab more wrenches constantly. Bought this and it easily doubled my efficiency. Haha. very accurate.
Olsa Tools Canada
Hello Truman, We really appreciate you taking the time to share your feedback with us. We look forward to seeing you again soon. Warm Regards, Olsa Tools
CanadaSo handy
I love this thing. Find myself using it all the time. From checking on a engine or trying to find the right nut this always helps me get the right tool bolt or nut for the job
Olsa Tools Canada
Hello Nick, We really appreciate you taking the time to share your rating with us. We look forward to seeing you again soon. Warm Regards, Olsa Tools
CanadaThis tool is a game changer
Very easy to use and accurate.
Olsa Tools Canada
Hello Sean, We really appreciate you taking the time to share your feedback with us. We look forward to seeing you again soon. Warm Regards, Olsa Tools
CanadaBought for my son who is a novice mechanic and it will help him tremendously with proper sizing of wrenches and sockets
Olsa Tools Canada
Hello Shawn, Thank you for taking the time to write positive feedback for us. We highly appreciate it. Warm Regards, Olsa Tools
CanadaVery convenient
Really cool little item, haven’t seen anything like it! So far it’s great
Olsa Tools Canada
Hello Dillon, Thank you for taking the time to write positive feedback for us. We highly appreciate it. Warm Regards, Olsa Tools