Carbide Insert, End Mill, HSS Drill manufacturer / supplier in China, offering Gt12 Quick-Change Tap Holder Bt/Mt4/Mt5 Shank Anti-Breakage Torque Control for M3-M12 Tapping (0.01mm Runout), F1 Series High-Speed Rough Boring Head 30, 000 Rpm Bt/Nt/R8/Mt Shank Sets ± 0.01mm Precision for Deep Cavity Machining, Rbh25-160 Heavy-Duty Rough Boring Head Twin-Indexable Cutter System ± 0.01mm Precision Cat40/Bt50/Hsk100 Compatible and so on.