The problem: removing heavily corroded screws requires the application of considerable force. The socket slips off the head of the screw. The consequences: uncontrolled movements cause injuries and damage to both the workpiece and the tools. The solution: STAHLWILLE sockets are equipped with the AS Drive profile. This permits high transmission of forces to the lands of nuts and bolts without damaging them. The risk of injury is minimised and the corners of the screw heads and nuts are no longer damaged. *AS Drive = Anti-Slip Drive