Carbide Inserts, Carbide End Mills, HSS Twist Drill Bits manufacturer / supplier in China, offering Myook D14mm HSS Tin Multi-Functional Straight Shank Twist Drill with Tin Coating (Fully Ground), Myook HSS-Co Twist Drill Bits D38mm Taper Shank for Ss Grade Stainless Steel Drilling HSS M35 Twist Drill Bits, Myook HSS-Co Twist Drill Bits D32mm Taper Shank for Ss Grade Stainless Steel Drilling HSS M35 Twist Drill Bits and so on.