Round screw punch BASIC suitable for: Sheet steel (ST 37), plastic and aluminum. Operation: Manual and hydraulic, punching waste is punched out in 1 part. Design: With punch, die and ball bearing tension screw with (encapsulated): Nominal size PG 36 mm, hole diameter 47.0 mm, screw size 19.0x75.0 mm, pre-drill diameter 20.4*mm, max. material thickness 3.0 mm