Diamond Glass Tile Cutter Drill Bits. WORTOOL - Hollow Core Drill Bits Extractor Remover Tools Hole Saws for Glass, Ceramics, Porcelain, Ceramic Tile, Pack of 16

I bought this in case I have to make a hole in glass or tile. When I received them, and took them out of the box, it was hard to see the sizes they stamped on the side, and they look cheap. I hope they work when I need them. But what do you expect for the price.

Inexpensive but you get what you pay for...

Great quality and very easy to use.

Less than HF quality good for 1-2 holes.

The bits worked very well cutting holes in ceramic pots.

Horrible product. 1-The metal that is made of is very thin so the bit that goes into the drill gets bended and is almost impossible to get it back to alignment. 2- is good to drill only a few holes as it easily looses the crown of whatever they put on it even if it is carefully irrigate/lubricate while drilling.

It good for the price it does the job

Finally had a chance to try these bits. Drilled three holes through a ceramic tile with plenty of water and drill press on slowest speed with minimal bit pressure. Diamond coating came off on third hole. Save your money and buy a higher grade of bit, unless you only have one hole to drill.