JINGLING 2Pcs 28 mm Diamond Hole Saws Granite Drill Bit Coated Masonry Tools for Stone

One bit used to cut 2 holes right through bathroom ceramic tile. Maybe took 30 seconds each hole. Start on a 45 degree angle, move slowly to 90 degrees, then use a gentile rocking motion from side to side vs forcing the entire bit face to do the cut.

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!

Got it done with a crappy electric drill too. Got through about 3/4” granite. Took some patience and some wetting

I drilled through a granite countertop and used just a single one. As long as just one or occasionally using it then probably good enough for most applications.

The hole saw went right through the 3/4” glass, with water surrounding area, never had an issue. Drill 10 pcs with one hole saw. The last two seemed like it had a slight drag to the drill but didn’t take any longer, just a slight more resistance-it seemed but nothing that stopped the drilling

I purchased a 5-pack of these hole saws for a little over $2. apiece.Being so inexpensive, I didn't expect much in the way of performance.Not the case.I drilled holes in two ceramic pots. The hole saw drilled right through the ceramic without even getting warm. I did use water on the ceramic to help the bit cool and cut.This item is well worth the price.

First attempt, tough to start on porcelain tile. Watch videos to learn how to properly start hole, not easy, go slow & it will do the job. Only cut 4 holes so I don't know how durable it will be.

used to drill hole in mosaic glass globe. worked like a charm.

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.

Good quality product

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

Excellent value for money. Used one bit to drill a hole in granite to add a new faucet.

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 (-: