Manufacture and supply various high quality full series of masonry drill bit, hammer drill bit, glass and tile drill bit 1. Material: YG8 carbide plus 40Cr steel blank, BC20 carbide plus 42CrMo2. Sizes : It can be made by customer's requests3. Shank type: SDS-plus, SDS-max, hex, triangle, spline4. Surface treatment: sandblasted, tin-coated, bright finished5. Craftsmanship: brazed by hand, brazed ...