Description
Contains 12 hole sizes; 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 5/8 and 3/4 inch diameters. ( .020 THRU NOTCH and 3 SURFACE NOTCHES .020″, .030″, .040″ DEEP x .750″ LONG.) 4340 STEEL. Includes Test Report and Certificate of Conformance.