Bosch Impact Tough 2" Torx #40 Power Bit is designed to withstand the high torque of new impact drivers. It has a 10x life over standard impact bits and is made from heat-treated alloy steel for increased durability. The X-Tended Torsion Zone helps to absorb high torque, while the advanced design provides a secure fit. The high-visibility sleeve with laser-etched markings makes it easy to identify the bit size.