15pcs Diamond Coated Drill Bit Set Tile Marble Glass Ceramic Hole Saw Drilling Bits For Power Tools 6mm-50mm

I used two of the set for drilling several holes through a 1/4" thick mirror so I could mount a light in the center of the mirror. No evidence of wear after a couple of holes. I had a garden hose running to provide a continuous stream of water. The only issue with the mirror was a small amount of chipping of the coating on the back, but I don't attribute this to the bits, but my technique.I would say, they are hard to beat for the price.

This is a complete hole maker kit that works well. I used it to drill 1/2 in holes in a thick project box so that I could mount connectors.It was so much easier than drilling out holes and then widening them with a grinder. The kit is a high quality kit at an exceptional price. Highly recommend it!

I'm in the middle of a remodel and had a few holes to cut in our new tile on the floor for toilet supply and sink Supply water lines didn't want to spend a lot of money on high-priced diamond hole saws so ordered this product it has accomplished what I needed it to accomplish but overall they wear out fairly quick but for the price it's a great Buy also keep in mind I was cutting through two layers of thin-set and quarter inch tile fairly heavy duty for a lightweight product but they cut through that very well for the money

Product works great, I am very happy with the set. They arrived on time and were packaged nicely. I will definitely order them again from the store as the price and quality are great.

Wasn't as efficient in cutting the whole in my counter top as I expected but it did the job.

Used the 2" bit to cut a hole in the side of two glass tanks to connect them. Held the drill bit in place w a large wet sponge and it cut through nicely- altho it chipped when I was almost through as I was pushing a bit too hard, but the resulting hole was still nice and smooth. I don't think any of the diamond bits came off. Even if I do only get a couple of more uses out of that one bit, it was well worth the price.

I have been making some Pinterest crafts that involve drilling holes in china, glass and ceramic goods. I was using my Dremel with diamond cutting attachment, and a drill with appropriate bits, and holes were taking me 45 minutes or more. It was really driving me away from my projects. I bough these and BAM! Intuitive design means you can just pop em in the drill and get busy. Very quick, safe. I can't rate it on longevity, because I just used them for the first time yesterday. I will update down the road.

I ordered these bits to cut a hole on tile for a shower wall. Like some other customer mentioned, the bits do not have a long life but even for a one time use, you cannot beat the price. I bought just 1 bit from a store for twice as much, but had to return it because it was not the right size. Instead I ordered this set, with 15 sizes. For practice, I "sacrificed" a couple of the little ones I knew I was not going to need, and also to start the cut - I did not know how long they were going to last. Once I felt confident, I used the biggest size (the one I needed) and it cut a perfect hole. It took some practice and I was glad I had the extra bits to practice with. I used the size I needed, sacrificed a few in the process, and still have some sizes left for another project. Not a bad deal.