The dewalt dt71507 qz 27 piece rapid load drilling and driving set is a mixed drill drive set complete with a tough case for convenient storage and portability is ideal for a wide range of wood drilling metal drilling screw driving and nut setting applications this 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