Name:Four flute monobloc end mills. Coating:TiSiN coating HRC: 55° Helix angle:35° Number of flutes:4 Material:0.6um tungsten steel carbide Material:Stainless steel, cast iron, tool steel, alloy steel, graphite, plastic, composite materials, etc. Applicable machines:CNC Machining Centres, Engraving Machines, Precision Engraving Machines and Other High-speed Machines.