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Every Detail for Dry Concrete Core Drill Bit
Selected diamond teeth and high-frequency welding technology for reliability and rust resistance. No more weld detachment.
Our diamond core drill bit fits most types of machines on the market. It can be easily installed on your existing machine.
Prolong core drill bit life and improve working efficiency with high quality diamond and strong steel body.
Widely used in installations for air conditioning, pipelines, stair railings, highways, airports, and various construction scenarios.
Drilling Various Materials Smoothly and Efficiently with Our Core Drill Bits.
Designed with universal 5/8"-11 thread, these diamond core drill bits can be quickly and easily mounted on standard core drilling equipment for versatility and convenience.
BETTERI Diamond Core Bits Make Your Work Easier with A Wide Range of Sizes.
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Matty
Reviewed in the United States on March 1, 2025
You really can’t beat these, especially for the price! Love them! I’ve ordered a bunch and definitely put them through the paces!
David Stiemsma
Reviewed in the United States on February 10, 2025
Dock pole install
Andy
Reviewed in the United States on January 5, 2025
No pilot bit or any way to chuck in my drill. Save your time and don’t buy this
William D. Harry
Reviewed in the United States on January 22, 2025
GC was well pieased with a very neat 2&1/2" hole thru 10" brick/concrete exterior wall.Very little wear to diamond cutter surface.
Jorge Gonzalez
Reviewed in the United States on January 12, 2025
Good
Rick S
Reviewed in the United States on August 6, 2024
The drill performed as well as the more expensive bits. Would have given it 10 stars if it were 11 inches long as advertised, its not (only 10 inch deep ) I had to sledge the core out, making a bit of a mess on the inside wall.
uncle
Reviewed in the United States on July 18, 2024
10 holes , 4 inches deep, no problems
Easy-Going
Reviewed in the United States on July 16, 2024
This diamond core bit drills really well. I used it to install 2.5 inch steel fence posts in rock. I drilled several 3.5 inch x 24 inch deep holes in volcanic rock using this bit and a hole hawg. It bound up a few times (as expected) but never broke any teeth off. I used a pump sprayer to keep the bit wet while drilling and besides missing most of the paint I couldn't tell the diamond teeth were worn down at all.I've used several expensive name brand concrete core bits at work and for the price this one didn't disappoint.I've gotten cheap diamond attachments before and their performance was terrible but this bit worked great and was 1/4 the price.
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