The 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 with a convenient hinged storage case complete with a bit location guide and is constructed from durable S2 tool steel.