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Black Oxide Drill Bit - 17/64" x 4 1/8" - 2-Pack
Drill faster and longer with the Bosch Fractional Jobber Black Oxide Drill Bit. Its speed helix design allows you to drill three times faster than you would with a standard bit. This black oxide drill bit withstands 50 percent more drilling than high speed steel bits and makes for smoother drilling through copper, steel, aluminium, brass, wood and more.