1、Sturdy Structure: The collet chuck holder is formed as a whole with good structural rigidity, and the pressure is dispersed on the accuracy rolling needle of the cage during use, making it suitable for large cutting volume processing. 2、Good Workmanship: The surface has been polished, making the tap holder beautiful and elegant. The handle hole and other parts are processed with accuracy grinding technology, resulting in high centering accuracy. 3、Stable Operation: No slot nut, reduced wind resistance design, reduced interference, reduced vibration, and more stable high speed machining. 4、Better Performance: Quenching and hardening with high concentricity, improving hardness and good comprehensive mechanical properties. 5、Good 40Cr Alloy Steel: Using premium 40Cr alloy steel material, with better wear resistance and more stable performance.