8 Pack Diamond Drill Bits Set for Granite Ceramic Marble Tile Stone Glass Hard Materials, Integrated Coolant for Fast Dry Drilling, Size 3/16 1/4 5/16 3/8 1/2 inch Masonry Core Drill Bits, Round Shank

I've only used these to drill about 6 holes through tile and durock so far, but they're holding up well (same but used for all holes). Wobbling the bit to creat the hole does up size it a bit, but decent quality bits. The wax used for lubricating makes pushing the tile nub out a bit tricky, but I chucked a smaller but in a drill and cut through the wax from the base of the bit and the nub popped right out. Again, I think these are decent quality and will serve to cut many a hole. Don't use too much pressure, let the bit do the work.

used the 1/4" bit to drill a very clean hole in a ceramic bottle. Very easy to use, go easy and let the bit do the work. You get the set of 5 bits for less than half the price on one drill bit at the big box store. Highly recommend!

Bought these so I could buy different ceramic mugs, jars, etc at the thrift store and turn them into pots for my house plants. They work okay, but take way more pressure and time than I expected, but maybe that’s a strength issue or normal, but it takes a while to get through. I appreciate the different sizes. I’d suggest looking for better quality ones in hopes you don’t spend 5 minutes at full pressure trying to get through things.

I used these to cut 4 holes in 1/4 thick porcelain tile plank and 1/2 inch of cement board. Worked great. It says they can be used dry, but I used a small amount of water. Bits stayed cool. I used 2 bits for 4 holes, but they all still had life left in them. Go slow, using only the weight if the drill. Took about 15 minutes per hole. As advertised. Recommended.

Great value, variety of sizes with proper storage case to keep all organized. Outstanding quality with convenient depth markings to help control drill depth.

Drilled through old powerline insulator in about five minutes. Pictures are of the first one I drilled through so it’s a little bit sloppy. Entry and exit wounds will probably chip. Tips and tricks: I’d say stay at the 45° angle longer than you think you need to and then slowly move to be perpendicular to your service. Very slowly. This might take a full minute or more. If you try to go perpendicular too fast, you will slip and make the scars that you can see in my pictures.

Worked for what I needed but the shaft is extremely easy to bend. Still happy with them considering the price

I was skeptical because of the price, but I took a chance and this (I only needed one bit it turned out) like a charm. I have to get into some rocks beneath a concrete slab, and where the concrete bits failed, this just ate right through them. Tip: follow the instructions. You don't need to start a fire; run it slow and apply minimal force. Gamble paid off! Great buy!

Bueno

I used one bit to drill 20+ holes in porcelain tile for a new shower install and no issues. There seems to be some wax in the hole to help with cooling, but I’d recommend keeping the bit wet. Drill on slow setting worked best. I’ve used a tile bits from other brand name manufacturers and these lasted longer.

Super Bohrer, funktionieren einwandfrei. Gutes Preis- und Leistungsverhältnis

Los he probado varías veces y trabajan muy bien, no dañan para nada las superficies cerámicas y es una excelente opción en lugar de una broca de concreto.

Needed it to drill a hole in a ceramic vase and it worked perfectly! Clean cut and no cracks or flaking.