JINGLING 2Pcs 20mm 3/4" inch Diamond Hole Saws Granite Drill Bits Masonry Tools for Stone

They work as good as good as the ones from the big box stores and at a much lower cost.None of them last forever but these performed fine. I use them to cut through stucco for running cable, conduit, and pipes.

Works very well! I used it to drill a hole in the bottom of a ceramic flower pot and it worked great!

Good value, not as fast as a higher-quality drill bit, but I got through ~1.25" engineered countertop in ~5 minutes. Starting the bit slowly (very slowly) while bracing your hand / drill to the countertop, angled at 45-degrees is critical! (Watch videos about how to do this, and this is true for any diamond drill bit, not just these ones).

I needed a dish soap dispenser and these worked great to cut through my granite counter top.

I didn’t have a lot of confidence that these worked that well but for the price it was worth a try. I thought no way would they work without using a hammer drill. Was I wrong! Cut through my brick like butter. I was pleasantly surprised. The only issue I had was didn’t go deep enough for my application and couldn’t add an extension due to the shaft’s odd shape. All in all I’d definitely buy again.

These saws work great.

Needed to cut two 3/4" holes in porcelain tile. I was very doubtful that they would do but very pleased at the results. I used a drill press rather than a hand drill simply because I knew it would be very difficult to hold a hand drill steady enough to get the bit started. Using a drill press also made it much easy to spray water on the bit while drilling. I drew crosshairs on the tile the aligned the four slots in the drill with the crosshairs to assure it was centered. By using a slow speed and steady pressure the bit cut in an made a perfect round hole in the tile. I highly recommend these bits. Don't know how many holes may be cut with one bit but the 2nd hold went just as easily as the first.

I got these for a plumbing project that involved drilling through some porcelain tile and cement board in a bathroom. They functioned well enough and cut a nice hole without much trouble. The reason for the three star rating is that the diamond wore away very quickly, even though I went slowly and used plenty of water on the first three holes.Started the fourth hole in a tight area and the bit caught. It did not snap, it bent severely, and I was not trying to muscle thru the cut. Used the second bit to continue and finish the hole. It worked well, but again, there was some pretty heavy ware on the bit.I knew that I was not purchasing a high quality bit at this price point. Better ones are far more expensive. I bought these as a couple time use and done kinda thing. I will be investing in a far better set in the near future. Like I said, you get what you pay for. If you only have a few holes to drill and don't want to spend much money then these bits will do the trick. If you are looking for something that will last thru many projects then invest in either a good bit or set of bits.