Screw hole cutter, hexagonal head, diameter 55 mm 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: 74mm Thread: M20 x 1.50mm Part Number: PI-71555 Cutter: screw-hole cutter, hexagonal head, diameter 55 mm – 71555, piher Type: