2 PCS SET OF TAP GUIDE SPRING LOADED 1/2" SHANK MODEL - Align Tap For Threading 

Spring Center Tap Guide Tool 1/2" Shank Align Tap For Threading Mill Jig Bore

Enables you to start every tap straight

Shank Dia: 1/2"

Point hardened to : 50-55 HRC 

2 PCS SET