Bosch Left-hand Black Oxide Drill Bits

The speed helix design penetrates 3X faster than standard bits. The benefits include easier drilling, reduced heat, extended drill bit life and extended cordless battery life. Triple tempered black oxide coated bits last 50% longer than regular high speed steel and offer reduced friction between bit and workpiece. 135° split point starts on contact with no walking or skating and no center punch is required.

The speed helix design penetrates 3X faster than standard bits. The benefits include easier drilling, reduced heat, extended drill bit life and extended cordless battery life. Triple tempered black oxide coated bits last 50% longer than regular high speed steel and offer reduced friction between bit and workpiece. 135° split point starts on contact with no walking or skating and no center punch is required.