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79 mm bi-metal hole saw with mandrel and pilot drill

RICHELIEU

RICHELIEU 962611 79 mm Bi-Metal Hole Saw with Mandrel and Pilot

SKU CH-KG8W-AYH25

79 mm bi-metal hole saw with mandrel and pilot drill cuts metal, plastic and wood using M3 high-speed steel teeth with 4/6 variable pitch and an EZE slot for plug removal

  • Cuts metal, plastic and wood with 4/6 variable tooth pitch
  • Electron beam welded M3 high-speed steel teeth for lasting hardness
  • Heavy-duty backing plate adds rigidity for accurate holes
  • EZE Slot allows quick plug removal on diameters from 45 mm
  • Includes screw-in mandrel and pilot drill for immediate use

79 mm Bi-Metal Hole Saw with Mandrel

This 79 mm bi-metal hole saw from RICHELIEU cuts metal, plastic and wood with a 4/6 variable tooth pitch. M3 high-speed steel teeth are electron-beam welded to a heavy-duty backing plate for rigidity and consistent hardness. The set includes a screw-in mandrel and pilot drill for immediate use. It suits tradespeople who need a single large-diameter cutter for mixed materials.

Upgrade from smaller or single-pitch saws

A variable 4/6 pitch replaces fixed-pitch blades that chatter in thick metal or bind in wood. The heavy-duty backing plate reduces flex that causes wandering on deep cuts. The jump is worth it when you regularly cut holes 45 mm and larger across different substrates and want one blade that handles all three without swapping.

Mandrel installs in seconds; watch plug removal

The screw-in mandrel locks onto the saw in seconds and fits standard drill chucks. On diameters 45 mm and up the EZE slot lets you lever the slug out with a screwdriver instead of prying. The common error is running the pilot drill too fast, which dulls the tip and makes the hole wander off-centre.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 68% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameRICHELIEU

Questions about this item

What shank size does the included mandrel need on my drill chuck?

The supplied screw-in mandrel fits standard drill chucks that accept its shank; match the chuck capacity to the mandrel shank before use.

How do I attach the hole saw to the mandrel, and what step is often missed?

Thread the hole saw onto the mandrel until the drive pins engage the saw’s mounting holes, then tighten the locking collar — skipping the pin engagement leaves the saw loose.

When should I replace the pilot drill bit on this 79 mm saw?

Replace the pilot bit when its tip wears dull or wanders off-centre, because a worn pilot prevents the 4/6 variable-tooth blade from starting cleanly.

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