1、STRONG WEAR RESISTANCE: Using 20CrMnTi steel material, quenched and hardened, possess high surface hardness and strong wear resistance 2、HIGH CONCENTRICITY: The inside and outside of the tool holder are integrally formed. Fine control processing bring more stable performance and high concentricity 3、INNER HOLE GROUND TREATMENT: After inner hole ground treatment, suitable for high accuracy machine tool processing and has a longer life than ordinary tool holders 4、STRONGER FATIGUE RESISTANCE: Using carburizing and quenching process, the hardness is higher, the fatigue resistance of the interface is stronger and more durable 5、1-7MM CLAMPING RANGE: The clamping range from 1-7mm, and the accuracy is equal or less than 0.005mm, very trustworthy. 10000rpm speed can realize fast operation