The DEWALT DWA2509 Impact prompt fast Load Holder is of accepting any 1/4 '' hex shank auxiliary. This holder is a of DEWALT 'S SureSet System ; a magnet secures fastener for wobble-free fastening. This piece fast Load for hurried and user-friendly auxiliary change. Also to accept screwdriver bit tips for versatility. A ready to hand, favorable auxiliary for anyone to have as a part of their tool system.