Dry Diamond Drill Bit Set,BGTEC 10pcs 1/4" 6mm Hole Saw for Granite,Marble,Masonry, Concrete, Tile/Ceramic, Glass, Hard Plastic,Vacuum Brazed Diamond Core Drill Bit Kit

It works as intended. Perfect for drilling ceramic tiles. Good for drilling 2 or 3 holes. That is why you buy a case of 10 bits. I am happy with it.

Amazing bits and WELL worth every penny

Makes a hole in ceramic tiles exactly as it should, you can't get in a hurry and let the drill bit "walk" you have to hold it steady, and use a spray bottle with water, helps the bit and keeps down dust.

These worked well drilling through 1/2 " tile, 1 bit worked great for 6 holes before I changed out for a new one. I would say these hold up pretty well, are well made and worth the money. Go slow and keep water to it and they will last for a good amount of boring holes. I did use a smaller pilot to start a hole, then used this to round out the spot before plunging in so not to stray off course.

Was trying to drill multiple holes in bathroom tile. Must be porcelain because it is extremely hard and thick stuff. After wearing out a bunch of carbide tipped drills and struggling to get thru just a few holes I bought these in desperation. Worked very well. I center punched and started with a 5/32 porcelain plus drill from ARTU and then followed with a 1/4" to about 1/16" deep at he shoulder. Then I went in with these diamond drills and was thru each hole in only a couple minutes. I cleaned up the holes with a standard 5/16" tile bit. Only thing to watch is that these can wander if you are not holding the drill straight. You need to rock the drill to get the chips to flow out of the hole. One drill has already completed 5 holes and still cuts well. If you need a very accurately located hole it still might be better to go with the Porcelain Plus line from ARTU but it will take longer and you won't get thru more than one of two holes without resharpening.

First of all, these bits are priced very reasonably. In the big box stores you might get 1 or 2 at most for the same price. I am a tile contractor and have used many different bits to drill through tile for installing grab bars or shower doors. These bits drill or grind their way through a hard porcelain tile quite easily. I start my holes by marking the spot to be drilled, etching a small starting point for my bit so that it is less likely to travel on the tile surface and then starting my bit at an angle till it begins to drill through the surface at which time I hold the bit vertically. I drill for about 10 - 15 seconds before dipping my bit in a bucket of water and putting a little water in my hole, keeping the bit cool and also extending its life. I do this approx. 4 times before the hole is completed. The bit is actually grinding a hole versus drilling a hole. I am very happy with these bits and will reorder in the future.

used these today. drilled 11 holes so far thru thick porcelain tile, and have only used 1 bit and it's still going. these are way more durable than I read about. Maybe folks aren't wetting them. I just dip in water every 8 seconds or so. this keeps them from overheating and dropping their grit.

So... Great value overall, especially if you're coming from higher end diamond bits for porcelain tile. I've always used Milwaukee (1 bit for a little more than I paid for these). For porcelain, I don't engage the hammer, I'm always in 2nd gear and I usually run between 3/4 and full speed on an m12 fuel hammer drill (again, not in hammer). On the Milwaukee's, I can get a good dozen to fifteen holes out, about 2-3 minutes a piece with 3 stops per hole before the bit slows way down. These are like 5-6 minutes a piece, maybe 6 holes max (you'll see) with 20 second stops per hole. You can feel, see and smell the bit start to get hot way early. And they wobble a bit. Not much, not enough for me to worry about, but you definitely have to back way off on pressure and be dead nuts on level or you'll end up with a larger hole than intended. Just dip them often, wipe them off and dip them again and keep everything wet. I wouldn't say go slow, just go a little lighter than normal on pressure. And treat them like a plunge router bit. Hit a stud and these will glaze over to the point of useless. So keep that in mind. Overall, I'm not upset. The price is right and even for the lost time I come out ahead in small projects. And I can quit trying to find the hard to find Milwaukee bits that I love now (and save the ones I have for larger projects).

Testat. Flera olika, koremantborr. Men de här. Är totalt bäst. Vaxet ihop med hög hastighet gick jättesmidigt. Kan varmt rekommenderas! 👍

forets utilisés pour percer du carrelage extrêmement dur. Perçage bien plus rapide qu'avec le foret spécial acheté plus de 30 euros chez Leroy Merlin, et plus de trous avec un seul foret. très satisfait

These drills worked perfectly. I had previously purchased one 6mmErbauer drill from Screwfix, but having seen the reviews here, purchased these and returned the Erbauer, which had a very short shank anyway. These drills were brilliant. I only used two and could have actually got away with one. I still have eight brand new. Used for drilling 30mm thick granite cap stones, as a pilot drill for 25mm core drilling. The fact that they have a 6mm parallel shank throughout their length is also useful. Totally recommend

Fantastiche! In precedenza avevo comprato una punta di una marca molto nota(quindi anche costosa) per fare 3 fori sul marmo e si è rovinata quasi subito anche se usata con acqua e a bassi giri, poi ho comprato queste convinto che mi sarebbero servite tutte per terminare il lavoro... beh, con soltanto una punta, maltrattandola usando tutti i giri del trapano e mettendo tutto il mio peso non sono riuscito a rovinarla! Complimenti all'azienda

Drill bits work great and the price is even better.