Suitable for sheet steel, stainless steel plates, non-ferrous metals, plastics Cuts holes in thin materials quickly, easily, cleanly and without splinters in a few simple operations Hole punch sizes in the set: 16.5 mm (M16), 20.4 mm (M20 / PG 13.5), 25.4 mm (M25), 32.5 mm (M32), 40.5 mm (M40), 50.5 mm (M50)