Cnc Milling Tool Holder Mingdun Bt30 Er32 70L Collet Chuck Tool Holder. Description: It's suitable for drilling, milling, engraving, high precision, widely used in precision machining 1 x BT30 ER32 70L CNC Milling Chuck Holder Specifications: Model: BT30 ER32 70L Material: 40cr Color: Silver Description: The handle has stable performance and long service life, after heat treatment has been greatly improved in hardness handle. Advanced production technology to ensure the accuracy of the handle, to meet your requirements in high precision machining. Chuck holder is stable using life, advanced vacuum quenching furnace to achieve carbon and nitrogen Co doped increase the hardness of the handle The life rate is high, and the cost can be reduced Note: CNC tool placement collet, must go beyond the collet hole effective clamping length, to avoid improper locking, resulting in the loss of. Use the correct wrench device, can not be arbitrarily changed so as not to cause damage. Do not use the rod with a notch or a plane of the CNC cutting tools. Do not air lock (not inserted in the chuck Holder) It's suitable for drilling, milling, engraving, high precision, widely used in precision machining Package Include:1 x BT30 ER32 70L CNC Milling Chuck Holder High Quality Replacement Parts! The measurement of the actual items may slightly different from the listing images due to manual measurement,please allow 0.5-1mm difference. Thanks for your understanding. Safe transportation with reliable package, deserving your trust.