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Grainger Threaded Shank Drill #21 Cobalt
Supplier: Grainger 16W789
The Grainger 7/16" Threaded Shank Drill Bit is made of high-speed steel and has a black oxide finish for increased durability. It features a 135 degree split point tip for faster penetration and reduced walking. The drill bit has a 7/16" diameter and is 6" long overall, with a 1/4" hex shank to fit power drills. It can drill through metal, wood, plastic and other materials. This threaded drill bit is designed for high performance and has an oil hole to keep the cutting edges lubricated.
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