Stanley 67-082 4-Piece FatMax Screwdriver Set 30% more torque for less effort than traditional style screwdrivers. Handle design includes a nylon core for increased durability and a tough polypropylene outer core with a solvent resistant rubber grip. Bolster for extra torque on tough jobs. Bar is chrome plated for increased corrosion resistance and the tip is hardened and heat treated tip for strength and performance. Permanent laser marking on bar and tip identification molded into the handle for easy identification.