Diamond screw punch, an innovative splitting punch with three cutting tips: punching waste is split into three parts. Suitable for: sheet steel (ST 37), plastic and aluminum. Operation: manual and hydraulic. Design: with punch and die, tension screw with ball bearing. Hole diameter 20.4 mm, material thickness 2.0 mm, nominal metric size 16 mm, nominal size PG 13, screw size 9.5x50.0 mm, pre-drill diameter 10.0 mm