Meet the DEWALT 1-1/8 in. Bi-Metal Hole Saw, a go-to solution for fast, reliable openings in wood, metal, and plastics. The 1-1/8" diameter is a common choice for electrical boxes, plumbing work, and cabinetry, delivering precise, clean holes with minimal burrs.
Why bi-metal matters — This hole saw blends hardened steel teeth with a resilient alloy body. The result is a tougher cutting edge that resists dulling and tooth loss when you’re drilling through mixed materials, reducing downtime and extending tool life compared with traditional tools.
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Diameter: 1-1/8 in.
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Cutting depth: 1.75 in.
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Material: Bi-Metal construction for improved longevity and versatility
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Arbor included: No — requires a compatible arbor (sold separately)
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Package: 1 piece
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Brand: DeWalt
Ideal use cases
Designed for professionals and serious DIYers, this hole saw excels when you need consistent, round holes in a range of materials. Use it for electrical installations (to route conduits or sized openings), plumbing projects (venting and fixtures), or cabinetry work where precise, repeatable cuts matter. Its durable bi-metal teeth hold up under repeated use, making it a reliable workhorse on busy job sites.
How this compares to typical options
Compared to standard carbon-steel hole saws, the DEWALT bi-metal design delivers extended cutting life and better performance in metal and mixed-material applications. The 1-1/8" size hits a sweet spot for common fixtures and fittings, balancing ease of entry with robust material removal. Keep in mind this model does not include an arbor, so pairing it with a compatible DeWalt arbor ensures a secure fit and smooth operation.
Pro tips for best results
- Use with a compatible arbor (sold separately) to ensure secure mounting and straight cuts.
- Go with steady, moderate drill speeds and let the teeth do the work to minimize heat buildup and extend tooth life.
- Securely clamp your workpiece and support the material’s backside to prevent tear-out on exit.
- Clear any chips regularly to maintain a clean cut and reduce binding.
Note: This product is sold as a single hole saw and does not include an arbor or pilot bit. For best results, pair it with the appropriate DeWalt arbor and a compatible drill for clean, accurate holes every time.
Vendor policy reminder: Sale of this product on certain third-party online marketplaces may be restricted.
