Changzhou Hongjian Tools Co., Ltd.  

Product Name: High Quality Carbide Step Drill Bits for Cast Iron Model NO.: step drill Usage: metal Drilling Material: Tungsten Carbide Type: Step Drill Standard: ISO 9001 Application: metal Performance Classification: High-End CNC Machine Tools Process Usage: metal-Cutting CNC Machine Tools Numerical Control: CNC/Mnc Movement Method: Point to Point Control Control Method: Closed-Loop Control Condition: New Processing Precision: