Dormer Pramet C822 45.5mm x 10.mm HSS-E Screwed Shank Woodruff Cutter DIN 850Engineered for precision keyway milling, the Dormer Pramet C822 Woodruff Cutter is built for machinists and workshops that demand dependable, repeatable results. With a 45. 5 mm diameter, 12 teeth, and a 71 mm overall length, it delivers clean, accurate keyways in steel, cast iron, and other alloys. Diameter: 45. 5 mm Width of cut: 10 mm Overall length: 71 mm Teeth: 12 Shank: 12 mm combi shank with Weldon flat and thread Material: HSSE cobalt based