WHEELER KIT Gunsmithing 89 Piece Professional Screwdriver SetThe last screwdriver set you'll ever need, the Wheeler 89 Piece screwdriver set has it all. The durable custom molded case features 54 hollow ground flat bits, 15 specialty bits, 8 allen, 4 phillips, 3 torx, 1 2 1 4 shaft extension, and a hex to square drive adapter. The hollow ground bits have a concave shape that allows for insertion all the way into the screw slot for maximum contact. The kit also includes 2 non slip, over molded plastic handles