Carbide Key Flat Shank Shoulder Punches with Air Holes Normal, TiCN Coating

shoulder punch with an air hole and a carbide cut-out circular shank with an air hole and a rotation stopper in the center of the shank. The material is carbide (V30). The shank diameter tolerance is +0.005/0, and you can choose between a normal type and a TiCN coating that improves wear resistance.