EnPoint TiAlN Coating Aluminum Stainless Steel Cutting 2-Flute Ball nose End Mill 5/32" 4mm Shank 0.75mm Cutter Dia 3mm Flute Length Round Bottom CNC Milling Spiral Router Bits for Cast Iron Produced from ultra-fine submicron nano grade solid carbide for maximum tool strength and durablity 2 Flutes allows higher feedrates and provides great chip clearance to prevent chips from sticking Ballnose for producing round bottomed grooves in hardwood and softwood, plywood & composites With TiAlN coating increases cutting speed and tool life as well as improving the surface finish; used to add a radius between perpendicular faces to reduce stress concentrations It is mainly suitable for milling materials from soft Plastics to tough Aerospace Alloys including Aluminum, Cast Iton, Carbon Steel, Tool Steel, Stainless Steel, Mold and Alloy Steels