G12912.5 Countersink - 90°

Countersink with 1-flute, 90° chamfering angle, maximum diameter 12.50mm with an overall length of 49mm and a head length of 17mm and 8mm straight shank, according to DORMER standard to produce a conical seat for ISO Metric countersunk-head screws, HSS with standard bright finish for machining free machining and plain carbon steel, wrought and copper or copper alloys