Irwin, 39105 5/16'' Installer Drill Bit 012429250
- Constructed of premium alloy steel for boring into a variety of materials including wood, plaster, and metal lath
- Special 82 degree point for fast boring
- Wire hole at the tip of the bit makes it easy to pull wire through walls, ceilings, and floors
- Ideal for installation of small wire for telephones, cable, TV, computers, and security systems
- Diameter: 5/16"
- Drill Spiral Length: 3.5"
- Overall Length: 18"
- Shank Size: .285"
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