The Martin Tools Body Dent Puller Tool provides a remarkably simple and easy method of removing a dent in a door or panel. Merely punch or drill a hole in the deepest part of the damage and insert a self-threading screw or hook. A few light impacts with the slide hammer will return the metal to the original position. The shaft is 1/2" × 13" and features a locking device to keep the screw from turning. It is made of cadmium and black oxide for a rust-proof finish.