Diamond Drill Bits Set, 10 PCS Diamond Hole Saw Set, Glass Drill Bit for Ceramic Tile Porcelain Marble Granite Stone Bottles

Great product for the price, quick shipping also.

I had a job on an ABS plastic panel, that had threaded "protrusions??" that had broken partially off The project was to remove some of the "bracing" around the main part of the threaded portion, so these "grinders" worked pretty good-- started with a bigger size, then worked down- using smaller sizes, to get the excess plastic removed. Since I was working on plastic, I was using hand tools, which was a little tricky, since the "shafts" are round--no way to hold them. I finally came up with a drill chuck with a 1/4 in. hex drive shaft, and a knob that fit the shaft. Only issue was the chuck was small, "about" 1/4 in. max., and the bigger grinder shafts were slightly to large --I got them kind of wedged in,Workd they barely held, but good enough. If they had a hex shaft on them, they would have been great--then you could use a socket, and a ratchet, or a handle of some kind.

I purchased these so I can drill holes in ceramic and terracotta planters. Once you figure out the technique of using diamond hole saw bits, they work well to get the job done. Fantastic value for the amount of bits you get. Knocking off a star because it has a smooth shank and I had to constantly double check that my drill was locking onto the bit

I haven't gotten to use these bits yet but it sounds like they will work for cutting glass without it! They were delivered quickly without any problems.

For the price it's a great value especially for the variety of size that you recieve. I used to cut hole in ceramic pots to add drainage. Worked great.

Works perfectly! I needed to make holes in some plant pots, and these did the trick. Make sure you have running water going over the hole and it'll be super easy.

Very good for price point. I don't use these very often, but needed to drill a drain hole in a ceramic planter and widen some drainage holes in others. Worked well.

Worked for what I needed it for I wouldn't use these for super heavy duty work Don't expect miracles at this price point

No good , i try one time but already 2 item broken

These drill bits will do the job, but they won't last as long as more expensive ones. Shipping time was a little slow.