Precision Tap Guide
Precision hardened Tap Guide Block for quick and accurate alignment of hand taps ranging from #0 through ⅝".
Actual size: 2⅛" diameter X ¾" high.
A tap guide helps you start threaded holes straight. Accurately guide hand tapped threads on the inside of a hole to accept a machine screw or bolt. If you start every hole straight, it will help prevent tap breakage and increase the tap life.
Made in U.S.A.