| 摘要 |
PURPOSE: A screwdriver having a screw supporting unit and a screwdriver bite are provided to prevent the separating and falling down of a screwnut from a center axis of a driver. CONSTITUTION: A screwdriver bite comprises a stopper, an elastic member(310) and screw supporting cylinder(200). The stopper is projected on a body portion(100) of a driver bite. The elastic member is installed at the outer upper side of the body portion. The elastic member gives elastic force to the body portion in a longitudinal direction. |
