Description 1 8mm 4 Flutes Tungsten Carbide End Mill Cutter HRC55 AlTiN Coating End Mill Cutter CNC ToolSpecification Material Carbide tungsten steel base metalCoating AlTiN Nano CoatedFlute 4 FlutesHighest cutting hardness HRC55Diameter of Head mm Diameter of Shank mm Blade Length mm Total Length mm 143502455034850441050561350661550882060Features Special four flute design provides small chip loads and quicker removal more sharp AlTiN nano coating hardness up to 55 HRC for general steel alloy steel mold steel Fit for milling from roughing to finishing one time ≤55HRC reduce tool changing times Chamfer design easy to install Package Included 1 x HRC55 end mill cutter