Designed for use with impact drivers, the SHOCKWAVEâ„¢ IMPACT DUTY accessory line offers a complete system solution for all drilling and fastening needs. This set includes assorted Torx bits perfect for heavy-duty impact applications. The SHOCKZONEâ„¢ design and special heat treatment absorb impacts and allow the bit to flex with a spring-like action. Features WEAR GUARD TIPâ„¢ for durability and a custom-engineered steel for enhanced shock resistance. Includes 31x 25mm bits in various popular TX sizes and 1x SHOCKWAVEâ„¢ locking bit holder (73mm long).