3 otters 15Piece Diamond Hole Saw Kit, (6mm-50mm / 1/4"-2") Glass & Tile Drill Bits, Ideal for Glass, Bottles, Pots, Marble, Granite Stone

Well worth the price, as long as you follow the instructions and keep the bit cool with water so it doesn’t get hot they perform very decent. Also in mind the price of this set and it does well for your money. If this tool is something you foresee yourself using every day then you will probably want to invest in a more professional much higher priced set. If this is something you’re only going to be using a few times then this is the set for you. They cost under a buck a piece and you can’t beat that price. If this set is going to see a lot of use then it’s probably not going to stand the test. They are somewhat cheaply made but once again for the price they do a decent job for the price. I would probably buy again for my purposes.

Don’t expect to have these in the toolbox for year . But for $9. U get a lot of different sizes and they work for a few holes . Can’t ask for anything more than that . Drilled 2 holes with one size and 2 holes with another and cut like butter through both . I’m sure I could get a few more cuts but my job is done.

This product is great. After a few uses it doesn't work the best. Eventually they will dull out and have to be replaced.

Clearly these aren't meant to be the highest quality tile hole saws judging by the price. I was not expecting a lot from them, as I only needed to cut a few holes.I was very much surprised!These did a great job on my tiles. I noticed a little chipping on the 7th hole I cut (in picture), but it will be covered by the escutcheon.The bits show some loss of diamond coating after use, but they are still usable (29mm bit was used, 25mm is new in picture).I'd never used a hole saw on tile before, and I found that if I clamped a piece of wood or tile with the the proper size hole in it over the top of my tile, I didn't have a problem with the saw walking away as others have noted.

I had to drill a hole for soap dispenser on my granite countertop. It did job. However, the quality was not that good (Guessed it for the price I paid). The bit bent towards the end, making my job almost impossible. I had to bend it back with a hammer and get the job completed. If I paid more for a quality piece, my job would have been way smoother.

Work great .. cut porcelain tile with ease

Great quality

A while back my wife and I did a pottery class. One of the pieces in particular was somewhat small and a little wonky, but had so much character I wanted to make it into a pot for a peperomia. After looking at a few options, I decided to give this set a try. It was the cheapest option and I honestly worried it might not hold up to even one use.I was surprised that it did the job well and quickly. The outer glaze was vary hard and the bottom of the cup turned pot was about an inch thick! However, once the initial cut was made, the bit did a great job going through the entire base. When I was done there was plenty of grit left on the bit to do another pot or even a few more if needed.Plus this came with quite a few sized bits, so I'd be able to do several more pots even if each bit only lasted 2-3 pots.If you are looking to just do a couple small holes in ceramic for a hobby, I'd definitely recommend this set. If you are doing this professionally as a tile layer or something, this will work, but might wear out faster than other sets. It also only has a solid cutting surface, no reliefs, and for my handheld approach it worked, but the final hole was somewhat irregular. That is no problem at all for my use case, but something to think about.Honestly though, I was shocked at how well it worked and held up for the price.