47-685-3 TiCN Coated Roughing End Mill .625" x 4-5/8"TiCN Coated Roughing End Mill Cobalt is harder than high speed steel and provides better wear resistance. It is commonly used on high tensile alloys. Titanium carbonitride (TiCN) is harder and more wear resistant than TiN. It is commonly used on stainless steel, cast iron and aluminum alloys. Features include 5 8" Mill Diameter 2. 5" Length of Cut 5 8" Shank Diameter 4 5 8" Overall Length 4 Flutes 30 Helix