Wokesi 6mm 8mm Cutting Dia,Pack of 4,Suqare Nose End Mill and Roughing End Mill Set,Std Length,HRC55,TiAlN Coated,Solid Carbide,CNC Lathe Router Bits Milling Tools (6mm+8mm ) 1.Contains:2pc Square Endmill(6mm+8mm Cutting DIA),2pc Roughing Endmill(6mm+8mmCutting DIA) 2.Material:Tungsten carbide,High quality TiAlN coating,Long service time. 3.Suitable for process Copper,Alloy,Iron and Steel under HRC55.High Performance. 4.High micro hardness,high abrasion resistance,good toughness.can be high-speed processing. 5.Package:2pcSquare endmills,2pcRoughing endmills