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3 re-sharpenable cutting edges are hardened for extreme durability and long life in tough materials
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Replaceable screw-point tip pulls bit fast for clean, true holes
- 7/16-in hex quick-change shank reduces slipping in standard chucks and is compatible with all 7/16-in impact drills
![Irwin® Speedbor MAX Self-Feed Wood Bits, 1 1/8", #IR-3046005 (1/Pkg) Irwin® Speedbor MAX Self-Feed Wood Bits, 1 1/8", #IR-3046005 (1/Pkg)](https://cdn11.bigcommerce.com/s-gdy1ehz/images/stencil/500x659/products/311806/447384/3046005__15380.1668458301.jpg?c=2)