Square head 45mm diameter hardened steel screw hole punch and brass corrosion washer Perfectly smooth edges for a perfect finish Cutting capacity: 2mm for metal sheet and 1.2mm for stainless steel A: 58mm Thread: M14 x 1.50mm Part Number: PI-71045 Cutter: Piher 71045 Square Head Screw Hole Punch Diameter 45 mm Type: