Irwin 62132-1/2-Inch by 12-Inch Black Oxide Aircraft Twist Drill Bit

The Bosch line of metal drill bits offers a solution for every professional application. Each bit is manufactured to exacting specifications and features a split point that starts on contact with no walking or skating, eliminating the need for a center punch. Bosch black oxide bits offer superior durability, speed and selection to support most general-purpose applications.

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 Deming)
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials
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 Deming)
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials

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BOSCH BL2759 1-Piece 1/2 In. x 12 In. Extra Length Aircraft Black Oxide Drill Bit for Applications in Light-Gauge Metal, Wood, Plastic;