Imagine never having to guess which size screw thread, tap or thread drill you have or need. Now you don't have to! 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!!
Note: Available in Inch and Metric Scale