The GripEdge Tools 13-pc RPT Star Plus Driver Set, No. STP13S, can replace standard Star Plus tools with bits made from precision-machined S2 steel with bidirectional geometry that prevents rounding and allows the removal of damaged fasteners. The design provides up to 50 percent more torque on new fasteners and up to 400 percent more torque on damaged fasteners, according to the company. Each bit has an oversized, roll-stamped ink-filled size marking and nickel-chrome plating for corrosion resistance. The set comes in a foam insert inside of a plastic case. The STP13S includes sizes IP6, IP8, IP10, IP15, IP20, IP25, IP27, IP30, IP40, IP45, IP50, IP55, and IP60.