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- Fast spiral design rapidly removes debris for improved performance in conventional cordless or electric drills
- Precision electronically brazed special grade tungsten carbide tips
- Drill in brick, concrete, stone, marble, tile, plaster and other masonry materials
- Cutting Length 2-1/2″ Overall 4″ Shank 5/16″
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- Set includes 1/16″ to 1/2″ by 64ths drill bits
- Manufactured from industrial high speed steel, surface treated for high performance and long life
- M2 grade steel for drilling common steel (flat bar, angle iron, tubing), wood and plastic
- No center punch needed: Century 135-degree quick-cut points are self-centering and penetrate faster with less pressure…will not “walk” or “wander” at the starting surface
- Manufactured to Aerospace NAS 907-B specifications.
- Made in the U.S.A.