Features 1、Surface Polishing: The surface is polished to make it smoother, has better corrosion resistance, and is not easy to deform. 2、High Accuracy: Made with the latest technology, one time molding, the accuracy of the body is 0.005mm, and the contact surface of the U drill is large. 3、Clamp Firmly: The tool holder is clamped at one time, the clamping is stable and not easy to fall off, which ensures your work efficiency. 4、Stable and Durable: Internal cooling water outlet, internal water can be entered during processing to prevent the drill from overheating, and the overall quenching treatment is more durable. 5、High Carbon Steel: The whole is made of high carbon steel with a certain hardness, and the inner hole is finely ground, so it is not easy to be damaged when used for a long time. Specification Item Type: Milling Chuck Bracket Material: High carbon steel Model: MT4 SLN20 Accuracy: 0.005mm Roughness: >0.08mm Package List 1 x Milling Chuck Bracket 1 x Fast Change Joint