Carbide Insert, Holder, U Drill manufacturer / supplier in China, offering Solid Carbide Small Diameter Boring Head Mnr 2.1mm Minimum Bore for Micro Boring & Precision Drilling, Industrial Mclnr 2525m12 External Turning Tool Holder Clamp Type CNC Lathe Machining Tooling, Mtgnr 2525m16 External Turning Tool Holder Clamp Type Lathe Tooling for High Speed Metal Removal and so on.