BOSCH BL2739 3/16 In. x 12 In. Extra Length Aircraft Black Oxide Drill Bit
Brand: BOSCH
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