Ideal for electrical distribution plant manufacturers, electricians, installers, industry and handicrafts. Wooden Screw Hole Punch | Before You Stitch Leather Belt Hole Punch Screw-hole Punch Set - 12 Pcs. 109008 | Screw Hole Punches Hole Punch Tool Suitable for sheet steel, stainless-steel sheets, non-ferrous and light metals, plastics. Ideal for switchgear manufacturers, electricians, plumbers... Suitable for sheet steel, stainless steel, non-ferrous and light metals, synthetic materials. 109200 is a screw-hole punch with three-point cutting tip. Cuts holes in thin materials quickly, easily, cleanly and without burrs in a few simple operations Tensioning screw: MF 10 Screw., 12., 9 grade steel.