◇ We apply international standard high-speed steel(HSS #6542) of good quality as base, plated by high-strength diamond. Very sharp with long life, made of MXCL, please identify the manufacture, LZM.
◇ Extremely different from those inferior twisted drills on market, which made by fake HSS and diamond of low quality, with no life and blunt.
◇ Suitable for gemstone, jewelery, glass, ceramic, non-metal material, nonferrous metal, metal, semi-conductor, electronics, RE, etc.
◇ Specification: diameter starts from 1.00mm