The Bosch Impact Tough Driver Bit features an Xtended Torsion Zone and has been upgraded to deliver 10X life over a Bosch standard bit. This impact-rated bit absorbs torque peaks to reduce stress on the fastener. The tip of the bit is precision designed and machined for a better-integrated fit and reduced cam out. These Impact Tough bits are an impact-rated line of screwdriving bits, double-ended bits, nut setters, sockets, drive guides and bit holders that have been enhanced to handle a new generation of higher torque impact drivers. It features laser-etched markings that are easy to read and won't rub off with repeated use.