The GripEdge Tools 62-pc Master R.P.T. Hex & Star Driver Set, No. MHST62S, features Rounding Prevention Technology that the company says provides up to 50 percent more torque on new fasteners and 400 percent more torque on damaged fasteners. The set includes hex, star, tamper-proof star, and E-star hex bit sockets made from precision-machined S2 steel. Each bit has a corrosion-resistant coating and oversized, ink-filled markings for easy identification. The set comes in a durable case with a foam organizer.