JINGLING 16mm 5/8" Tile Hole Saws Diamond Drill Bit Masonry Tools for Stone Pack of 5Pcs

drilled a hole on countertop for water filter faucet. worked well. after drilling complete hole, one drill wore out but thats expected.

I was a little concerned given the reviews, and not wanting to crack my counter. Debating getting name brand, debating getting one that went into my angle grinder. Don't worry about it.Used it on a quartz top, with my Dewalt cordless. Cut through in under 2 mins, super easy, took me longer to cut through the plywood base.I get that pros might want something durable, can't speak to that, but for someone wanting to cut a hole or two in their countertop, this gets the job done.

It gets harder to drill additional holes after a few has been done. However, the tip seems to perform better if you squirt some water during the drilling. Good value for the money since I only needed to drill 5 holes. I still have the other one in the pair for future use after the first one is worn out.

I purchased these diamond cutters to bore a hole in our quartz countertop. We were able to use a single bit to get all the way through the counter with no issues. The bit is reasonably durable, and easily performed a clean and perpendicular cut. Very happy with this item, and would highly recommend to anyone needed one as well!

I use these to cut through the cultured marble for bath vanity tops. It works great for that, cuts through very easily and smoothly. Hole size seems accurate. Seems to hold up well, but I haven't used it more than a handful of times so far. Good value for the money for sure.

I bought these inexpensive bits not expecting much from them. Had to drill two holes in 3/4" Quartz. I figured that 5 would the job done. Well, it only took 2 and, even then, thats really only because the Quartz piece got lodged in one of them and I couldn't get it out so I had to use another. The same bit could've cut both holes without missing a beat here.I doubt they're as good as the 40 dollar bits I see all over the place, but they're also a fraction of the price and work just fine. For comparison, my two used bits next to a new bit, as you can see both have some life left in them.The key, of course, is to keep them as immersed in water as possible and not overdo it on drill speed. I had them in an 18v cordless drill and wrapped plumbers putty around the cuts, which I filled with water. The cuts took a couple of minutes each but it worked. For less than $10.I would absolutely buy these again for any light duty stone project but I have a feeling I won't need to for a while since I have so many left.

This hole saw doesn’t have an arbor/pilot bit since having one most likely would snap or break sensitive material, so drilling is impossible without a guide plate.

Made two holes through large format stone tile easy.

The media could not be loaded.  I was able to drill these drain holes on a non flat surface without any problem. Very happy with this product.

I bought these bits expecting them to disappoint big time. However, I placed one in my 20V Dewalt hammer drill and walked to the lake. I proceeded to bore 4 holes 4" deep into a large granite boulder at the lakefront. To this I Inserted metal pugs and then attached my dock to the pins. I had two 180lb. gentleman standing on the attachment point of the dock and it didn't budge. I knew the boulder wouldn't move, but I was impressed that these cheap little diamond hole saw bits could bore a hole in Canadian Shield granite the way they did. It was a pack of 5 and I used three of them to make the 4 holes with handyman tools. Well worth it (-:

Only used for a short time so far, but all good to now. Done about five holes into man made stone (with water and a mask!)

Good quality, very easy to drill the hole on planters and flower pots. Just the right size

appreciated the instruction to hold it at a 45 degree angle. cut 2 holes with one bit no problems at all