... speed International quality Professional manufacture High speed precision CNC handle quality assurance, welcomed the advisory negotiations Surface fine workmanship ... accuracy, each collet do inspection accuracy, strong commonality!.Numerical control handle speed requirements (7000-10000 r/min) BT30, BT40, ... 2500-30000 r/min) BT30, BT40, BT50 seriesThe handle of the ontology accuracy is 0.005 mm hardness ...