1)We are cutting tools manufacturer,also specialize different kinds of hardware,hardware parts 2)Size can be ... be coated by TIN, TIALN, ALTIN, TIAIN, etc.2) Excellent performance in some sticky metals cutting ( ... steel, hardened steel, quenched steel, non-ferrous metals, etc.6) Standard or as per your requirements, different ... from HSS, HSS-CO, tungsten carbide, etc. tungsten carbide hardware tools