... , stainless steel ,quench steel and some composite material.Suitable for cutting HRC55 steel2,Specification is complete and Goods are in plenty ... mm.3,Independent packing and fine appearance 4.Material:tungsten carbide,Solid Carbide5.Coating:TiALN,ALTiN,TiN coating or bright finished ... according to requirements of drawings or samples GDK 3-300 Carbide Corner-radius End Mill