3 otters 15PCS Diamond Hole Saw Kit, Glass Drill Bits for Drilling Holes in Glass, Bottles, Marble, Granite Stone, Tile Cutting 0.24 Inch - 2 Inch（6mm - 50mm

Honestly, these work better than I expected for such a cheap price. I haven’t used them all but I’ve used most of them, and they have all worked. I’m tickled pink with these bargain buy.

My wife had a few clay pots without drainage holes. She asked if I could pot holes in those pots. After a little research and watching some YouTube videos I decided to take on the challenge. I purchased this set because of the price and amount of pieces. First I practiced on a small clay pot then moved on to a much larger pot. It worked! No breaks! I’m glad I purchased this set and acquired a new skill. I would certainly recommend the product…

Work as advertised!KEEP THEM WET when drilling!

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 bought these a while back (maybe a few months) and just now got around to using them. I needed a 1 3/8" hole drilled through some ceramic tile for some copper pipe to stub through my floor for hydronic baseboard heating. Anyway, the closest one I found in this kit (if you wanna even call it that) was 40mm. Would've preferred standard, not metric, but whatever. You get what you pay for, right? Guess that's on me.I'm sure others have already pointed out the downsides to these, but here's my quick take. They're okay, if you go easy on them and put your drill on low speed and for god's sake stay in line with what you're cutting. Being that the arbor is made into the saw, it will bend if you get out of alignment with your work. This is what happened to me, halfway through a cut. Luckily, I was able to throw this thing in a bench vice and straighten it back out to finish my cut. The cut came out fine, but I have a few more to make, and honestly, I don't think this think this thing will make all of them.So...is what it is. You get what you pay for.I will go to the hardware store tomorrow and buy a quality diamond hole saw kit. This one is probably okay if you gotta make one or very few cuts, but otherwise I don't like it all that much. 3/5. Wouldn't recommend or buy again, honestly.

These were so cheaply made the material on the cutting heads wasn’t even consistent — just bare metal in spots.Not worth it. Use another brand. Bad quality.

Wife wanted for drilling holes in her house plant pots. Works as they should

I’m almost positive I have already written a review of these, but since it has let me write another one I’m going to take the opportunity.These are brilliant. I’ve had them for 3 years now and they still surprise me with how well they work. They cut through all types of pottery with just a moderate amount of pressure. I had a coffee cup that I wanted to use as a planter and that was the hardest thing to drill through that we’ve done so far. But even that came out really nice. I highly recommend these if you have plant pots that you want drainage holes in.