... material with TIALN coatting which longer the using life. Carbide end mill1)Super high hardness and precision, extreme smooth ... can be coated by TIN, TIALN, ALTIN, TIAIN, etc.2) Excellent performance in some sticky metals cutting (good anti-sticky ... application.4) Work piece material: cast iron, carbon steel, alloysteel,hardened steel, quenched steel, non-ferrous metals, etc. 2/4 flutes end ...