Screw hole cutter, square head, 100 mm diameter tempered steel and brass washer against corrosion. Perfectly smooth edges for a perfect finish Cutting capacity: 2mm for metal sheet and 1.2mm for stainless steel A: 122mm Thread: M20 x 1.50mm Part Number: PI-71100 Cutter: Piher 71100 Square Head Screw Hole Punch Diameter 100 mm Type: