Wheeler Professional Gunsmith 43 Piece Screwdriver Set Screwdrivers are the most important and most-used gunsmithing tools. Wheelers Professional Gunsmith 43 Piece Screwdriver Set is a kit that belongs on every gunsmiths bench. The well thought-out bit selection will put an end to burred, buggered, busted up screw slots on any gun that comes your way. The bits make up the heart of any screwdriver set, and Wheelers are the finest available. They're made from S2 tool steel and hardened to 56-58 Rockwell C. The hollow-ground bits are gently curved as it reaches the tip instead of being straight to protect the fit and finish of the screw. The hollow-ground shape spread forces equally along the sides of the screw slot resulting in no damage. The 43 Piece Screwdriver Set features a very comfortable overmolded screwdriver handle to ease all of your work. Never lose a bit with the durable custom box thats ready for the bench or your range kit.