Combined Centre Drill, #8, 5/16 in. Drill, 3/4 in. Shank

Centre drill (combined drill and countersink) with 60° straight conical form, double ended and cylindrical body, 8 with 5/16" drill diameter, a body diameter of 3/4" and an overall length of 3.1/2", according to ANSI standard to produce form A centre holes, HSS and bright finish for machining free machining, plain carbon and alloy steel and grey and malleable cast-iron.