BOSCH BL2747 5/16 In. x 12 In. Extra Length Aircraft Black Oxide Drill Bit
- Speed helix design for three times faster drilling than standard bits.
- Last 50 percent 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).
- For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.