The Bosch Custom Case System Set (SDMS44) is compatible with Impact Tough Bits, delivering the best case for the best bits. With the Xtended Torsion Zone, Bosch Impact Tough screwdriver bits have been upgraded to deliver 10X life over standard impact bits. The Xtended Torsion Zone absorbs torque peaks to reduce stress at the bit tips. They are designed to handle the additional torque of today's impact drivers. The durable, well-designed case provides tilt-in/tilt-out convenience for easy access to the bits. Since it's customizable, it helps increase user productivity by reducing time searching for the right bit. This jobsite tough case features a secure case latch and rubber bumpers.