DEWALT 3-1/2 in. Bi-Metal Hole Saw is built for bold openings and dependable performance across materials. With a 3-1/2" cutting diameter and a 1.75" cutting depth, this bi-metal hole saw is ready to tackle large holes in metal, wood, and certain plastics with precision and durability.
Why this hole saw stands out
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Bi-metal construction combines tough cutting teeth with a flexible back, delivering longer life and resistance to tooth wear when drilling through stubborn materials.
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Large diameter, deep cut capability makes it ideal for conduit and pipe openings, electrical work, and bulkier hardware installations.
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Versatility in one tool — suitable for metal, wood, and select plastics, helping you reduce tool swaps on job sites.
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Arbor not included so you can pair it with the arbor that fits your drill setup (sold separately) and your preferred quick-change system, if applicable.
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Compact package count — 1 piece per package, ready to load into your drill kit for on-site projects.
Specifications at a glance
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Diameter: 3-1/2 in
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Cutting Depth: 1.75 in
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Material: Bi-Metal
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Number in Package: 1
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Arbor Included: No
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Brand: DeWalt
Ideal for whom and what problems it solves
- Electricians running conduit openings in metal studs or panels, plumbers creating clean access for pipes, and installers needing large holes quickly and cleanly.
- Carpenters and DIY enthusiasts tackling projects that require sizable, accurate holes without compromising material integrity.
- Users seeking a durable, long-lasting hole saw that maintains a sharp edge through repeated drilling sessions.
Practical tips for best results
- Confirm you have a compatible arbor for your drill setup before use, since this item ships without an arbor.
- Keep the work surface steady and start at a steady pace to establish a clean cut, then increase speed as needed for the material you're drilling.
- Use steady, perpendicular pressure and avoid forcing the tool to reduce wear and heat buildup.
- For metal drilling, consider light lubrication or cutting oil to extend tooth life and reduce galling.
Choose the DEWALT 3-1/2 in. Bi-Metal Hole Saw for reliable, large-diameter cutting capability that stands up to professional use. It’s a purpose-built solution for large openings, designed to deliver consistent results when accuracy matters and time is of the essence.
