The Bosch Impact Tough Bit Holder has been upgraded to deliver 10X life over standard impact bits. With an Xtended Torsion Zone, precision engineering and heat-treated manufacturing process, these impact-tough bits deliver tough torque and power for longer - and with less cam out. Bosch's Impact Tough™ bits are an impact-rated line of screw driving bits, double-ended bits, nut setters, sockets and bit holders that have been enhanced to handle a new generation of higher torque impact drivers. These bit holder also comes with high-visibility sleeves for greater user convenience.