Screw centered holding and screwing device, has screwdriver bit with rod, where rod slides in one of tubes and washers are brought closer with respect to each other when user places screw and exerts pressure on screw

摘要

The device has a screwdriver bit (1) with a hexagonal shaped iron rod (11), where the rod slides in a hexagonal shaped opening of a tube (5) and washers (2, 6) are brought closer with respect to each other when a user places a screw and exerts a pressure on the screw . The washer (6) slides in an opening of a tube (20), and two squared iron bars (12, 13) are articulated at the level of their U shaped notches (14, 15) which are embedded in other U shaped notches (8, 10) of the washer.