Bosch 3-Pack 2.5" Impact Tough Square Double Ended Insert Bit is designed for use with impact drivers. It features a 10x life over standard impact bits, thanks to its X-Tended Torsion Zone that helps to absorb the high torque of new impact drivers. The advanced design provides a secure fit, while the heat-treated manufacturing ensures increased durability. The high-visibility sleeve with laser-etched markings allows for easy identification and use.