Maxtech HSS73622MX 50 Piece Drilling and Driving Set 50-piece drill and drive bit set offers an advanced collection of handy and popular drill and driver bits Provides bits ideal for use on steel, plastic, wood, concrete, and stone Provides driver bits and nut setters; extension shaft for power bits and nut drivers Includes hole saw accessory, spade bit, center punch for lock installations Bits store in self-standing plastic case; portable or wall-mount