Bi-Metal Hole Saws

Not all hole saws are built the same. If you’re cutting into wood one day and metal the next, you need something tough enough to handle both. That’s where bi-metal hole saws shine. Built with cobalt alloy teeth and designed for long life, these saws give you a cleaner cut and save you from burning through cheap bits.

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Why Bi-Metal Makes a Difference

Truth is, these hole saws are built for jobs where regular bits just don’t cut it. The bi-metal design combines high-speed steel teeth with a flexible alloy body, so you get strength and flexibility in one. That means:

  • Versatility – woo/8" cuttid, metal, drywall, even cement board if you need it.
  • Durability – cobalt alloy holds up under heat and keeps its edge longer.
  • Depth – most give you about 1-7ng depth, which covers electrical boxes, framing, and cabinet installs.
  • Faster plug removal – speed slots clear out slugs instead of leaving you wrestling with a screwdriver.

Features You’ll Notice Right Away

A good hole saw doesn’t just make the cut—it makes your day easier. Here’s how these stand out:

  • Reinforced teeth that bite clean without dulling after a few holes.
  • Variable pitch design so the cut feels smoother, with less noise and less chatter.
  • Speed slots that pop plugs out fast—no more fighting with stuck cores.
  • Cobalt build that keeps going where basic steel burns out.

If you’re drilling drywall today and steel tomorrow, this is the kind of tool that saves time and money.

If you're looking for a wider selection, check out our boring bits & drilling bits collection, or view options like step drill bits and spade bits.

Who Uses Bi-Metal Hole Saws?

  • Electricians use them to cut clean holes for conduit and junction boxes.
  • Carpenters lean on them for cabinetry, furniture, and framing.
  • DIYers use them for everything from shop projects to home upgrades.

Take, for example, the Timberline 602-122 HSS Bi-Metal Hole Saw 1-5/16″ × 51 mm,great lightweight build with serious cutting depth. Or if you're drilling multiple sizes, the Timberline 602-116 HSS Bi-Metal Hole Saw 1-1/8″ × 51 mm is a solid all-around option.

FAQs: Bi-Metal Hole Saws

What materials are bi-metal hole saws suited for—do they work on metal, wood, and masonry?
Yes. They handle wood, metal, drywall, and cement board with no problem. For true masonry or concrete block, you’ll want a carbide-tipped saw instead.

How does the tooth design improve cut speed and slug removal efficiency?
Variable pitch teeth cut faster and smoother while reducing vibration. The slot design lets you push out plugs quickly instead of wasting time prying them loose.