Abstract: A broach for working the services of pre-cast or preformed pins on workpieces while the workpieces are rotating, including a broach body and having a number of sections including a roughing section provided with cutting elements including perforated reversible plates fastened therein. The cutting plates are formed of a hard cutting material and have cutting edges which converge toward each other in a pushing direction of the broach during working along lines defining opposites acute angles symmetrical with respect to the longitudinal axis of the broach.