5* BT30 ER16 Collet Chuck Tool Holder for CNC Chucks & Holders Drilling Machines

High Precision: Itsshank type is BT30, the collet type is ER16and its drawbar thread is M12. It has an accuracy of 0.003-0.005 mm. So it can do the holding work precisely under the right usage. Long Service Life: Each chuck is made of high-quality hard Cr40. The surface polishing treatment also allows it to be more anti-corrosion and anti-rust. So it has a long service life, you can use it with confidence. Stable Holding: The chuck offers stronger holding and reduces the vibration of the tool. So it can hold the clamp drills, reamers, end mills or taps tightly and stably. Longer Processing Length: The collet has excellent clamping force, its processing length is 70 mm/76inch. So it can reach a further place to process the items. Wide Applications: This product is widely used in the industrial field, it can be used for clamping drills, reamers, end mills, taps and much more.