SHDIATOOLDiamond Core Drill Bits Set for Porcelain Tile Granite Marble Stone Brick Vacuum Brazed Hole Saws 06 08 10 25 35 51mm (6 of Pack)

They cut so good. I went thru tile and mortal to install a shower head. Like butter.

I often use diamond bits of various sizes depending on the job I am doing and I really only needed an 1 1/8" & an 1 1/2" and this set had both. I was a little skeptical at first with the inexpensive price, but decided there were enough good reviews to try them. Have only used those two sizes a couple times thus far out of the set, but I can tell from experience that these bits will last a long time, so having all of the other sizes is a huge bonus since I do use other sizes.The biggest advice I would give to those you have never used hollow, unguided diamond bits before is .... Always start at an angle, around 45 dg, always keep water on the cutting area, which I use a sponge to control the amount of water and just squeeze it as needed, and lastly cut at a low to medium rpm, never high speed. In addition, I always wash my bits right after so they don't build up with material.Great bits, great price, definitely recommend

Cuts very accurately and easily worth every dollar I haven’t used it long enough to rate longevity but so far so very good

Nice tools to have to drill tiles with perfect work. Fast and efficient.

I am a professional plumber who bought these thinking for the price, who cares if I only get a couple of holes out of each bit. Much to my delight I have cored multiple holes in granite countertops, porcelain tile and quartz countertops with the same bits over and over. I highly recommend the drill bit adapter as very rarely is a grinder( or the dust associated with it) necessary. Drilled a 1 1/2” thick black granite countertop today in less than 60 seconds with my cordless drill for a faucet mount. Highly recommend.

As a tile installer I was amazed how well these work. Can't beat the price compared to what I've paid for the higher quality tile bits. I would definitely purchase again

Great core bits for the price. Cored a couple of 2" holes through epoxy tops without an issue, highly recommended!

The product and finish looks high quality. I drilled 2 holes in concrete and the bit still looks great. Don't buy the cheaper bits. They are an utter waste of money. Buy this set. In the long run it will be cheaper.

Très pratique pour installer porte de douche donc percée céramique.

Well built. They fit my Bosch grinder just fine. They cut quickly and cleanly. They bite into the material quickly so they don’t lose their position at all. Very happy with these.

Very decent drill bits, they are heavy so drill press is preferable to use. They are also thick so it takes a while to go thru tile but it works well.

Great bits they say dry/ wet but use water the bits will last longer

My husband has used it numerous times and is very happy.