5Pcs 4-Flute End Mill Tungsten Carbide 4 Flute End Mill Cnc Milling Cutter For Specifications: MATERIAL:These end mills are made from ultra-fine tungsten carbide material which ensures good milling, cutting performance and high work efficiency ADVANTAGE :They have sufficient anti-bending strength, wear resistance, high hardness, high wear resistance and high strength WELL POLISHED SURFACES:Well polished surfaces are quite clean, neat, and there is no glitches or burrs on the shank CONVENIENT:They have high strength, hardness and wear resistance and the cutting edges are quite sharp WIDELY USED:Widely used for milling holes, grooves and edges on plates and the process will be smooth