The dewalt dt71700 qz is a 27 piece drilling and driving set in a rugged case for easy storage ideal for drilling in wood metal and screwdrivingthe set includes a rapid load bit adaptor nut setter and compact magnetic drive guide the hss g drill bits are precision ground twist drill bits for rapid drilling long life and excellent concentricity in both wood and mild steel the high quality screwdriver bits are designed with a flexible torsion zone to absorb torque peaks and reduce the risk