The Bosch Custom Case System works with Impact Tough™ Double-Ended Bit clips, providing the best case for the best bits. Impact Tough™ Bits have been upgraded to deliver 10X life over standard impact bits. Double-Ended Bits provide great value and extra life by having two tips, while maintaining the performance of single-ended bits with the Xtended Torsion Zone. This zone absorbs torque peaks to reduce stress at the bit tips, which is important for today's high-torque impact drivers. The clips snap in/snap out of the case easily for easy access to carry only the bits needed. The clips come loaded with four double-ended bits and provide easy removal of bits with tilt-in/tilt-out convenience. This customizable organization system features a durable, well-designed case to help users increase productivity by reducing time searching for the right bit.