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

I had 33 holes to make through 10mm thick porcelain floor tiles, ready to fit some fixings for balustrade posts.These were recommended by the Balustrade suppliers.Used very wet they did an excellent job, all holes done, no broken tiles. In fact by keeping the centre clear of debris I managed to get everything done just using 2 out of the pack of 5.Highly recomended.

Do a good job. Only used 1 on a job but that leaves 4 for the next ones

Does the job. Will get through hard porcelain tiles with a bit of effort. Don't expect them to last long though - between 5-8 holes before its useless.

I don't often leave reviews, but these drill bits are quality.I bought the pack as I thought I'd get through a few drilling into porcelain tiles on two bathrooms.One bit done both bathrooms. Very impressed. I've bought much more expensive bits in the past that have been complete rubbish. Not these.Nice to find something that actually does what it says it will do.

I had some 2cm porcelain patio slabs to drill. These drill bits cut through them well but once you cut all the way through the piece of porcelain tile is stuck inside the drill bit.I tried drilling holes in the side of one drill bit to knock the piece of tile out but this didn’t work.I then realised that the shank of the drill bits are also hollow and so put a long Allen key through the hole and held the drill bit in a vice and repeatedly hit the Allen key but this still wouldn’t remove the piece of tile stuck inside.Once there is a piece of tile stuck inside the drill bit is useless.I tried but you just end end with the piece of tile inside spinning round on top of the tile you are trying to cut and the diamond surface doesn’t make contact with the tile you are trying to cut.So long story short, they work, but only once due to the ridiculous design.

Bought these thinking I'd use up the entire box to just about manage the few holes I needed to drill into 12mm thick porcelain tiles. I was nicely surprised at how well these performed. I only used two!I'd recommend to take your time, removing the crap from the middle of the drill bit regularly and use a little water anyway. They did a tidy job. Plenty of bang for your buck

Does the same job at a fraction of the cost of a single drill bit from the DIY sheds

It may not be completely evident from the photos and description, but FYI the bits are not hollow like many of these, so you can't simply use them to drill a hole in things like tiles. I had to drill a smaller hole then use these to enlarge it to size.

I needed this drill set to mount a number of security cameras around my home - which is stucco where the mounts were attached. This drill bit is great, however be aware you will need to use the hammer-drill setting on your drill if you are going through stucco (or get a drill that has this setting). The bit cuts very fast, needs virtually no cooling, and just works. I've already drilled about 10 holes through stucco with one bit, and the bit still isn't worn out. All I did was stick a plastic anchor in the hole and the job was done. Great purchase!

These worked great. Remember to start at speed on a 45 degree angle. Use a bar of soap to lubricate during drilling, a trick from my stone installer. I probably got 4-6 holes each in 6mm porcelain slabs.

Funcionaron muy bien. lo mejor es usar las brocas en taladro de mesa y refrigerando con agua. satisfecho con el producto. gracias

Worked as advertised.. good price.. nice case.Happy with my purchase, I haven't used more than 2 so I cannot 100% rate the longevity of them but they seem just as good as more expensive ones so far, no failures out of 2.

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.