SALI Diamond Core Drill Bits 2" Diameter 10"/254mm Drilling Depth 5/8-11" Thread Core Bit Turbo Laser-Welded Segments for Cured Concrete with, Brick, Block, Masonry, with Two Adapters

The media could not be loaded. This diamond core drill bit worked great to drill two holes through a 9" concrete foundation. I need to relocate the oil fill and whistle pipes for our oil tank and was going to have someone drill the holes in addition to repiping. The cost of drilling was very high so I decided to do it myself with this bit and a $50 1/2 drill I picked up. The drill bit was really great and I got both holes drilled in just over an hour. I had never used this type of bit before so didn't know what I was in for, but this bit worked great and I'm very happy with the results. Saved a lot of money doing it myself and now have a 1/2 inch drill and coring bit for future projects. Nice, high quality bit. Comes with two adapters. I'm not sure if you can use this with a hammer drill or not. Read the description thoroughly to see. Also, if you haven't done this before, the bit will (like any bit) bind at times and with a high torque drill will spin the drill violently, so be careful how you hold it. Don't use your belly to press the drill. The bit also does not require water, but water helped to clear out the dust from the hole which seemed to keep things moving along more smoothly and faster, though the hollow core bit does have slots to let the dust fall out. Really happy I was able to use this to do these holes myself.

This Core Bit worked absolutely great. It cut through red brick with ease. It worked as described. I used it to install a mini-split air conditioner and it worked better than I expected. It took 5mins total to drill through the brick. The price was more than fair and the quality is good. Over all I am very satisfied with the purchase and use of this Core Bit. I highly recommend.

Drilled a 5” hole in my poolside concrete to install an anchor for a pool basketball goal. This drill did an amazing job. I took my time and used a hose to wash and cool the concrete while I drilled. It took about 30 minutes.DO NOT USE THE HAMMER FUNCTION.Core drill bits with diamond cutting edge cannot be used with the hammer function. It chips off the diamond dust. You can only do that with the hardened alloy core drills.

I was using this core drill to core a whole through a filled section of concrete block. I was taking it slow and easy with a Bosch corded hammer drill, and about 5 inches into the 12 inch core the bit siezed in the hole. When I pulled it back one tooth was broke off. This happened 2 more times. By the time I got about 10 inches in I had 1 tooth left. I chiseled out the center and I finished with a diamond hole saw since the deepest part was done. I know it wasn't an expensive bit, but I did expect it to be around for another couple of cores after this.

Worked great for my needs cut 1 hole trough concrete. Saved me hours of work. Not sure if I will need again but perfect for my needs

Good quality but didn't go the distance.I was able to get most of the way through the foundation before the end of the bit fell apart.The foundation was approx 10" thick.The bit worked quickly in getting 8"-8.5" through before the teeth broke off.It was pretty impressive up to that point and I do realize that I may have been asking too much from it.

Decent performance and drilled a straight, uniform hole. Not quite as aggressive of cut as some others I have used. Perfect for the two holes I needed. 5 stars based on value.

with some water got me through my slab twice and will probably be re-used again some other time. Did this with just a battery operated drill and not a huge drill but you should definitely use this with a guide handle on your drill or risk going to urgent care with a broken wrist....it can kick when it hits wire mesh, rebar, or rock changes.