Avery #30 X 1/2 Csnk Cutter

STOP COUNTERSINK CUTTERS -- 100°U.S. MADE High speed steel. 1/4-28 threaded shanks. 100° 3- Flute precision ground. For use in micro-stop countersink2052 #30 (1/8 rivet) .1285 1/2 dia.