Screw punch sets Diamond screw punch sets consisting of splitting punches and dies. 7 pieces in different sizes. Suitable for stainless steel (VA), sheet steel (ST 37), plastic and aluminum. Manual and hydraulic operation (we recommend the use of hydraulics). Design consisting of splitting punches and dies. Stored in a practical, sturdy plastic case. Nominal metric size 16/20/25 mm with a maximum material thickness of 2.5 mm and 32/40/50/63 mm with a material thickness of up to 3.5 mm.