Flexbar or Precise Self-Aligning 0 to 1/2 Handtapper & Reamer Guide

Accurate, econimical, time saving. Aligner automatically squares up the tap pr reamer with the surface. Holds tap and reamer true, preventing breakage. Hardened jaws. When changing jaws, housing slots serve as wrench for closing sleeve. 3/8" diameter x 1/2