Reviewed by 1 customer
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Comments about AN Bolt Identification Gauge, AN3 to AN10:
I have a couple friends who can reliably identify AN hardware by looking at it. They're both aircraft mechanics, and use AN hardware all the time. If you're one of these, you don't need this thing, but for the rest of us who use AN hardware once in a while, this is a very handy tool. It's well made, so will last a long time, and allows very quick and reliable identification of hardware so you can order just what you need. Great addition to the tool box.