|Log In |  My Account |  Cart Contents |  Checkout
Our inch and metric scale Screw Size Checkers are perfect for helping directly determine what screw thread size you need. These are a must for every knife and gun enthusiast. Used for thread, tap and drill determination.Imprinted with KnifeKits.com on one side in high-impact, precision threaded plastic. Package contains base unit with complete instruction guide. Fool Proof!