Screw punch sets Diamond 12-piece screw punch sets including hand punch and accessories. Optionally with a straight hand punch or a 90° angled hand punch suitable for stainless steel (VA), sheet steel (ST 37), plastic and aluminum. Hydraulic operation. The design consists of five splitting punches and dies, hydraulic screw (2 pieces), pilot drill and spacer bushing set (3 pieces). Stored in a practical and sturdy plastic case. Contains a straight hydraulic hand punch. Nominal metric size mm 16/20 and 25 mm, with a max. material thickness of 2.5 mm and 32/40 mm, with a max. material thickness of up to 3.5 mm.