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Your cart is empty.3-1/2" Wet diamond coring bits designed for drilling hard concrete, hard brick, and other hard masonry. 1-1/4"-7 threaded arbor. Drilling depth: 14". Wet use only. 10 mm segment height with #30/40 diamond grit.
FearisnotmyGuide
Reviewed in the United States on March 18, 2024
Value
RichB
Reviewed in the United States on December 18, 2024
Great drill bit, keep it wet when using and lasts longer.
Harry
Reviewed in the United States on October 22, 2024
For the price i paid for it, i never expected it to last foreve, it might have had a ruff up or two and missing 2 teeth but it's still going. 2 teeth that has gone, is by no fault of ours but it is grinding still.
BOB WOOLEY
Reviewed in the United States on January 4, 2024
Drilled 3-1/2 hole 7-1/2 through 3500 psi concrete in 19 min with one rebar.
Wayne
Reviewed in the United States on September 23, 2023
Made an existing hole through 8” poured concrete larger
Electrician
Reviewed in the United States on March 9, 2023
Hole saw is great for its price. I made 3 holes mounted on my Milwaukee rig and there is plenty of teeth for more. It should be used wet only with a good water system, otherwise it will not last a bit.
Michael Roderick
Reviewed in the United States on February 21, 2023
I thought this was a cheap price compared to the high end black bit but it turned out to last just as long. It might be slightly slower in very hard stone and old concrete. But it does last. For 1/3 the price. Nice.
Zone7
Reviewed in the United States on February 11, 2022
If you don't have a water rig, drill a small hole in the concrete, then back feed water into the hole as you drill, it will work the same as a water feed core rig. I drilled multiple cores out of a 8" poured concrete basement wall easily.
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