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.
