Wokesi 2 3 4 5 6 8mm Blade Diameter,Square Nose End Mill Set,Pack of 6,4Flutes,HRC55,TiAlN Coated,Tungsten Steel Carbide,CNC Router Bits Cutting Milling Tools(2/3/4/5/6/8mm HRC55) 1.Contains 6pcs square endmills:2mm/3mm/4mm/5mm/6mm8mm Cutting Diameter. 2.Material:Tungsten carbide,High quality TiAlN coating,getting long tool life. 3.Suitable for process Copply,Alloy,Iron and Steel under HRC55(HRA78). 4.High micro hardness,high abrasion resistance,good toughness.can be high-speed processing. 5.Package:1 Pack of 6 Pieces Endmills