Blade D80 Solid Carbide, Six cutting Edge Blade. D80 Solid Carbide, Six cutting Edge Blade. The D80 is made of solid carbide and features 6 cutting edges. Scrapes surfaces and deburrs sheetmetal up to 0.12" (3mm). Great for Sheetmetal and Slot Keyway Applications and Good for use on Steel, Aluminum, Copper, Brass, Cast Iron, Stainless Steel, Hardened Steel and Plastics