Carbide end mill using High original tungsten material with TIALN coatting which longer the using life. ... surface, can be coated by TIN, TIALN, ALTIN, TIAIN, etc.2) Excellent performance in some sticky metals cutting (good anti-sticky ... steel, alloysteel,hardened steel, quenched steel, non-ferrous metals, etc. 2/4 flutes end mill-standard length