CNC Tool Holders, U Drills, Carbide End Mills manufacturer / supplier in China, offering 3D/5D Internal Cooling Center Water Outlet Drill Bit Coolant Carbide Drill Bits, 6H High Precision Metric Thread Ring Gages Gage Gauge Check Inspect Threads, High Precision Thread Plug Gauge Go/No Go Gage Metric Gauge 6hprecision Internal and so on.