Dormer C82032.5X5.0 0193686 Woodruff Cutter 32.50 mm x 5.0 mm C820 milling cutters are Woodruff cutters for milling Woodruff keys in steels, cast iron, aluminium and stainless steels, and have a bright finish to ensure a clean and accurate result by preventing workpiece material from sticking to the cutting edges of the tool. They are manufactured from High Speed steel for excellent tool strength, performance and wear resistance and have a screw shank for secure holding. C820 Woodruff milling cutters are manufactured to a Dormer Pramet standard and can be used to mill woodruff keys in spindles and shafts