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Your cart is empty.Versatile dry/wet multipurpose core bits with high diamond concentration and soft bonding for a wide range of applications. Dry drilling is ideal for brick, block and natural stones with Moh's hardness
William M
Reviewed in the United States on March 12, 2025
Great product worked great cutting into concrete block. 10 minutes to get it done. Would have given it 5 stars if the guide bit would have stayed in place when drilling.
Don
Reviewed in the United States on April 4, 2025
I just completed my vent dryer hose and outside vent kit. This required a 4-inch hole cut into the brick going outside. Let me just a couple of things before I give you the end result.When you get this bolted up to your Big drill it's going to be a handful. And when you start the drilling process you better hold on tight especially if you're on a ladder like I was. If you let it get stopped up with brick dust it just about flip you. So stop often clean the brick dust from the hole saw and the brick you are drilling.However, this beast performed 100%! After I completed the hole I looked at the saw. No wear at all. So if you can hold onto it you've got yourself a good one my friend.
TA
Reviewed in the United States on September 17, 2024
I only needed to drill one hole in the concrete. This worked perfect. I decided to keep the area wet to cool the bit and keep down the dust. It worked just as expected. It took about 10 minutes to drill through 4" concrete floor. I took short breaks in this time to pour water on it. I do recommend using at least a 1/2" drill with good power. Also, if you use water remember to use a GFCI outlet or cord.
Terry Booth
Reviewed in the United States on August 31, 2024
This concrete/masonry core bit is awesome. I needed to drill a hole for a 6 inch vent pipe installation for a bathroom vent. The first bit (from a cheaper brand) exploded within minutes. This bit did the job without effort. We did apply water to control dust and reduce the possibility of overheating. Slow and steady was the process since we were working on scaffolding 26 feet above ground. I'm not certain how long it took to complete, because of the precarious position and height, I took several breaks.If you're in need to drill a hole this size or another of the options that eDiamond has to offer, I would seriously consider this product.Works well and quality constructed. I'm well pleased with the results.
belairguy
Reviewed in the United States on August 14, 2024
This hole saw did my job with ease. Boring though brick is slow and time consuming. But this tool was up to the task. Good clean accurate cut. I used a 500 rpm 1/2” rotary drill. This tool does not require a hammer drill. Good value for the money.
Jerry L. Althiser
Reviewed in the United States on May 5, 2024
It worked as advertised 😊
aaron rosenberg
Reviewed in the United States on December 28, 2024
Purchased to make a hole in 10” thick concrete block wall for installation of a 6” round duct. Worked great dry. I found that I needed to remove the pilot bit once I was at a depth of 3”. Did it dry, other than dust (wear a dust mask) it worked great. Still good for another hole if the need should arise.
LoJo
Reviewed in the United States on December 14, 2024
Drilled 8 holes through driveway pavers without any issues.
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