Bosch 4-Piece 1-7/8" Impact Tough Nutsetter Set includes 1/4", 5/16", 3/8" & 7/16" bits, each designed to provide 10x life over standard impact bits. The X-Tended Torsion Zone helps to absorb high torque of new impact drivers, making them ideal for heavy-duty applications. The customizable, convenient bit clip allows users to snap in/snap out precisely the bits that they need, while the tilt-in/tilt-out case mechanism allows easier access to bits. The precision-engineered nutsetter heads deliver a tighter fit & less damage to the screw, while the heat treated bit manufacturing provides stronger bit. The high-visibility bit sleeve & markings makes finding the correct bit for the job easier. The durable case features secure case latch & rubber bumpers for added convenience.