Bosch DDMS40 Impact Tough Drill Driver Custom Care System SetThe Bosch Custom Case System is compatible with Impact Tough driver bits and drill bits, delivering the best case for the best bits. The Black Oxide Drill Bits provide longer life than standard drill bits, thanks to their tip design and black oxide coating. Highlights: Impact tough bit design both driver & drill bits are impact rated & provide longer bit life than standard impact bits Driver bit x tended torsion zone helps to absorb high torque of new