Bolt Size Finder Keychain

Use it every day in semi repair. Never leaves my belt loop! Such a time saver, especially since semis use both metric and standard.

I have this superpower that I wasn't aware I had. It seems that I can very accurately determine the size just above or below the nut size that I need a wrench for. This handy tool helps save me a lot of walking back and forth. It will very quickly pay for itself.

I have this superpower that I wasn't aware I had. It seems that I can very accurately determine the size just above or below the nut size that I need a wrench for. This handy tool helps save me a lot of walking back and forth. It will very quickly pay for itself.