Boring Tool, Anti Vibration Boring Bar, Drilling manufacturer / supplier in China, offering Factory Supply Chuck Bt40A D6 L130 Shrink-Fit Tool Holder for CNC Machining, Factory Supply Chuck Bt40A D6 L120 Shrink-Fit Tool Holder for CNC Machining, Factory Supply Chuck Bt40A D6 L90 Shrink-Fit Tool Holder for CNC Machining and so on.