MAD DOG® Dry Diamond Core Bits for Masonry & Stone, Sizes 1-inch to 6-inch Diameter, 9" Length with 5/8" Threaded Arbor.

All diamond core bits use a standard 5/8"-11 or 1-1/4"-7 threaded arbor and are compatible with nearly every core machine on the market. For Hilti machines, see adapters.

Select a Size from Dropdown List

Sale price$39.00 USD

Pickup available at Thousand Oaks Warehouse

Usually ready in 2 hours

Please call 800-618-5000 to confirm availability prior to arrival.


Designed for coring masonry, stone, cured concrete with light to medium steel reinforcing, and similar materials.

  • Segments are laser-welded and will hold up over extreme heat and pressure.
  • 9" Tube length with 5/8"-11 threaded arbor fits most core drilling machines.
  • Use with most electric/air drills or variable-speed grinders.

Please note that the bits no longer have venting holes and are now made of thicker steel tubing for added strength and durability.

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