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Cylindrical carbide grit hole saw 4-3/8 inch diameter gulleted edge side slot

Morse

Morse MHSG70 Carbide Grit Hole Saw 4-3/8

SKU CH-SANX-2ZCMK

Cuts hard or abrasive materials such as cinder block, cast iron, unglazed ceramics, fiberglass and composites with a gulleted carbide grit edge for chip clearance

  • Cuts hard and abrasive materials cleanly with carbide grit edge
  • Gulleted edge clears chips efficiently during cutting
  • Side slot improves leverage for easier slug removal
  • 111 mm diameter suits larger hole applications
  • Compatible with Morse MA35PSNCT and MA45PSNCT arbors

Morse MHSG70 Carbide Grit Hole Saw 4-3/8

The Morse MHSG70 is a 4-3/8 inch (111mm) diameter hole saw with a carbide grit cutting edge. It is designed for cutting hard or abrasive materials such as cinder block, cast iron, unglazed ceramics, fiberglass and composites. The gulleted edge provides chip clearance during operation. This tool is intended for trade professionals and serious DIYers working with tough substrates.

Check your arbor and material compatibility

A separate arbor is required to operate this hole saw; compatible Morse models are MA35PSNCT (139830) or MA45PSNCT (139847). Verify that your workpiece matches the listed materials, as the carbide grit design is specialised for hard and abrasive surfaces rather than general-purpose wood or metal cutting. The unique side slot aids leverage and slug removal across various material thicknesses.

Replaces standard bi-metal hole saws on abrasive

This carbide grit saw upgrades from conventional bi-metal blades when cutting materials that rapidly dull teeth, such as cast iron, composites or unglazed ceramics. The grit edge maintains cutting ability longer in these specific applications. The jump is worth it for users who frequently encounter slug removal issues, as the side slot design eases core extraction compared to traditional closed-cup saws.

How it compares

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

Price $41.99
Pricier than about 62% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameMORSE

Questions about this item

Does the MHSG70 include an arbor or must one be purchased separately?

The box contains one carbide-grit hole saw only; a separate Morse MA35PSNCT or MA45PSNCT arbor is required.

How do I choose between the MA35PSNCT and MA45PSNCT arbors for this 4-3/8" saw?

Both Morse arbors fit the MHSG70; select the model that matches your drill chuck size and shank preference.

What does the 4-3/8" diameter mean when cutting through cinder block or cast iron?

It produces a 111 mm finished hole in hard abrasive materials, with the gulleted edge clearing debris and the side slot easing slug removal.

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