Features:Three stands of the product are forged by bearing steel. The key part is part made by high quality steel and main part is well quenched. With high accuracy, strong holding ability, perfect reliability and stability. With self-tightening ability, holding the drill chuck lightly. During the working period, the holding ability will be increased with the torque. The holding ability can prevent the knife tool skidding or falling down. | |
Functions: With self-tightening ability, holding the drill chuck lightly. During the working period, the holding ability will be increased with the torque. The holding ability can prevent the knife tool skidding or falling down. |