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

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.

I was attempting to drill 12 holes into a brick wall to hang a large TV. I can't use a hammer drill because it'll break the brick. I used a regular drill and a carbide masonry bit...3 different ones and after an hour or so I made one hole. That's wasn't reasonable. I searched for something different and it led me here. I had spent probably $50 on several other bits that weren't working until I came across these. Once I got them I immediately tried them out....or one I might add. It worked so good that only one bit drilled all the rest (11) of the holes. Took about 3 minutes to drill one hole compared to an hour.TIP: If using in brick, drill speed at a medium speed and medium pressure. More pressure for less speed. Don't allow the bit to get hot. Drill for 20 seconds and dip the bit in water to cool. Dry it off and repeat process. It works very well if you keep patience. Avoid using water for lubrication unless it can be fully submerged. A dry bit is fine as long as it isn't getting hot.NOTE: This bit is NOT designed for metal of any kind.Good luck!

They worked for cutting holes in plate the first one cracked a little because we are inexperienced at this You need a steady hand and electric drill .It slides off the plate but we put a plate in a plastic bowl with wet towels to hold the plate we used tape on the bottom of the plate to help not crack and we used the water method to drill the hole . so read up on that. Do i think there the best out there. I really don't know, but we did 7 plates for a Christmas project with a few tries. Experiment on a cheap plate first.I like that it had extra bits. It's good price for beginners.

Working on a big project of 252 bathrooms. These have saved a lot of money and have been just as durable as the others from the big box stores at $18 each. The get clogged and you have to clean them out, if not trash it and grab another. It’s only $3 a bit compared to the 18 and still getting 12-25 holes per bit.

I drilled 6 holes into tile for a toilet flange without having to use water and there was no degradation of cutting whatsoever. I have had bad experiences with other lower cost bits in the past, but these absolutely work great. I used a corded drill so they cut through pretty quickly.

I was hanging a permanent shower rod. Needed to drill 4 holes into porcelain tile. Purchased a $18 single diamond edge hole saw and it didn’t make it through 1 holes. I decided to give this 10 piece set a try and am amazed. Finished the one hole that the $18 could not make it through and continued to drill the remaining three holes (all with a single one of these drills) and that one has more life to it. Highly recommend this set of 10…

Good for one time use. I was drilling holes in pots my wife purchased. Dulled quick.

Very good product

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!

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.

Nice drill bit ... regrettably, I think they may have build my block out of armoured concrete used in bunkers ... I think I wore out two of them piercing the outer wall ! ....

Super Bohrer, habe damit 10 Löcher in 3 cm Granitplatten durchbohrt, funktioniert immer noch. Kann ich empfehlen.