Customer Reviews for VEVOR Core Drill Bit, 50.8 mm Diameter 11 Threaded, 241.3mm Depth Diamond Dry Coring Bore Tool with a Pilot Bit & Blade, Masonry Hole Saw Bits for Hard Concrete Brick

Good price, quick delivery, product working fine. What more do you expect me to say??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

drilled through concrete block

We cut through block with this, went slow, and it cut through it no problem. Very good value if you’re only needing to make a cut or two. Definitely buy the shank that it suggests, no local retailer near me carrier 5/8” shank needed.

Although I only have an old hammer drill (Hammer off) I drilled it wet. I first hammer-drilled a small hole through the wall and then ran an evaporative cooler water supply line into the inside of the basement. I inserted it inside the small hole and stuffed some foam insulation around it so that water would come out into the center of the coring bit. I then mounted a piece of particle board with a 4-in hole in it to guide the bit. It worked really well! I am 70 years old and I was drilling the hole in a very awkward position but I'm quite happy with the way it turned out. I know that the bit teeth were wearing down, as they are supposed to, because I occasionally saw a sparkle of diamond dust in the water that came out. That coring bit is tough and it has several holes left in it!

Took bite out of high strength well that consisted of 5000+ psi concrete, masonry brick and cinderblocks. It wasn't anywhere close to fast but it got the job done well. Water helped speed up the process but it was extremely messy...The free cutting disk works great too.

Price was great, delivery was fast, great product, thank you very much. Drilled 2 - Two and a half inch holes 13" deep thru poured solid concrete wall. Took about 2 hours. Im very pleased

The bit worked great and was a terrific price. It went through brick and concrete block as described, with several breaks to cool off my hand drill that I used for the project. I would definitely recommend this product for its performance and very competitive price. Be sure to wear a good mask to prevent silicates from getting into your lungs and ear protection. It will be loud! When receiving the bit, I was concerned that the diamonds supposedly on the cutter portion of the bit were absent from view, but it really did the job with very little wear upon the tool.