Dry Diamond Core Drill Bit Set,BRSCHNITT 2 1/8 Inch (55mm) Diamond Hole Saw Core Drill Bit with Triangle Shank for Porcelain Tile Ceramic Stone Granite Marble

Bought to drill granite countertops and almost returned because lacked center point bit, afraid of bit walking. It performed great, drilled quite easily. I was surprised,and bit didn’t break down it appears to be ready for many more uses.

I made a mistake reporting that one drill bit was missing. I found the second drill bit. I then used this product to cut a quartz sink top. It was like cutting butter or soft wood. These work really well, and the bit showed no wear after the job.

Good product for the price.

Cuts a hole like a butter! so smooth and fast. I learned it the hard way after ruining a couple of my hole saws by using them to cut out a hole through stucco. Now I know so I ordered this and did another job of making a hole through stucco (exterior wall) and it was so smooth and fast! Not sure of the durability just yet, but my first use was so satisfying.

Pretty good price, worked well with drilling though about an 1 1/2 in countertop (concrete) using a cup of water, slight orbiting while pressing down with firm pressure, and patience. Had to stop halfway through to let everything cool. Overall success I would say until I had to get the block of countertop out of the drill bit, I had to eventually drill my own holes through the metal drill bit at the top to punch it out so I could re-use the drill bit. Bit of a design flaw IMO since my other hole saw bit have holes at the top for that very reason, but hey...

Made fast work of cutting through shower wall tile and cement backer board. Took less than a minute and that was with stopping twice to dip the saw into a cup of water to cool it off. Don't know if that was really needed but was recommended.

Very well made. Use them for a lot of uses. Scraping excess wood, plastic, metal. Make holes in metal The diamond cuts do not snag and break material. Dip into water if u need to cool the bit. Lasts longer.

I used this to drill 1" spigot holes in two 1.5 Gallon Glass Jars with a https://www.amazon.com/dp/B00V3UONCW?ref=ppx_yo2ov_dt_b_fed_asin_title drill bit guide. Worked like a charm. Just do it in a sink with cold water trickling over the hole bring drilled, and use a battery powered drill that you can occasionally reverse during the process.

I'm installing porcelain tile around two bathtubs. I first drilled a hole in a piece of wood with a wood bit and clamped it to the tile to use as a guide. The tile bit drilled through in a matter of minutes, it should be good for many more tiles. I can't compare it to any competing products but it worked excellent for my needs. I would definitely buy again.

Used once but great result. Drilled through ceramic tile like knife through butter. A good buy

Al principio,no me decía nada . Pero al usarlo es bueno, cumple y es barato .hay que usarlo con inclinación para que marque en el material y luego enderezar ya que no tiene broca. Desbasta bien. corta bien buen acabado

Used to cut a hole in the bottom of a glass bottle. No issues, it went through well. Easy enough to use of you don't put too much pressure on. Start with an edge first as going for the full bit cause it to skate on the material. One is began to cut you can then work the full edge in.

Ik heb maar één gat in een keramische tegel moeten boren ( met water ) en het boor was super scherp ! !