Features:Made by the best steel. Main parts are quenched with the features of high accuracy, excellent holding abiliy, perfect reliabiliy and staility. With self-tightening ability, holding the drill chuck lightly. During the working period, the holding ability will be inceased with the torque. The holding ability can prevent the knife tool skiding or falling down. | |
Application Range: Often used in electric tools, drilling machine, lathe and CNC process centre. |