21-Pc. Drill Bit Set, Metal, Black Oxide

Bosch black oxide bits offer superior durability, speed and selection for most general purpose applications. Best for cutting holes into metal and work equally well in wood and plastic drilling.
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.

Drilling with High Precision

• Speed helix design for three times faster drilling than standard bits
• Last 50% longer than high-speed steel
• Easier drilling, reduced heat and extended drill bit life
• Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming)