1、0.005mm High Accuracy: High accuracy, using the latest technology to create the body accuracy of 0.005mm, which is convenient for your use. 2、Stable Clamping: The clamping is firm and stable, the tool holder is clamped at one time, and the inside and outside are formed at one time, and the contact appearance of the U drill is large. 3、Polishing Treatment: Exquisite technology, the appearance is polished, the roughness is >0.08mm, it is sturdy and easy to use, and it is not easy to be deformed by the use of accuracy craftsmanship. 4、Overall Auenching: Internal cooling water outlet hole, which can make your drill more violent during processing, overall quenching, sturdy and easy to use, cost effective and long term use. 5、Steel Material: The whole is made of steel material, the inner hole is ground, and the corrosion resistance is good, and it is not easy to be damaged after long term use.