Diamond Drill Bit - BRSCHNITT 1/4 inch Masonry Drill Bits Set for Porcelain Tile Ceramic Stone Granite Marble,Hex Shank Diamond Hole Saw Drill Bit(5pcs/Pack).

works as advertised, dip drill bit occasionally in water

Bits work good. Drilled 8 holes in porcelain tile on 1 bit. Kept it wet and cold and didn’t press to hard.

Good product based on price and quantity. These drill bits are not durable at all, I used two per hole. Considering the price, quantity, plus free shipping it is a good deal.

I had purchased other drill bits stating they would penetrate tile, marble, glass. I was attempting to put drain holes in some porcelain plant containers. The drill bit worked great on terra cotta and a kiln dried clay pot, but would not even begin to penetrate my porcelain pots. This drill bit, the pointed tipped one, cut through the porcelain like it was butter. Could not be more pleased with my purchase. I certainly could never have bought 2 more porcelain pots for what I paid for these drill bits.

they did what they were supposed to do. I drilled through hard porcelain tile without too much problem.

I use these drillbits when I was building a new tile shower. I needed to drill precise holes in the new tile to hang a very heavy shower door. So the holes had to be done right. These bets did the job. I use one bit to start the initial drilling and another one to finish the job. Great product!

These drill bits make it easy to drill a rock but they do not last very long. It was super useful to make the starting hole and to smooth out a hole in a rock.

I held my breath while using the starter bit and it scored the ceramic tile and started making a hole. I did have a spray bottle of water to keep it cool and did not pull the full trigger while starting and even getting the hole big enough for a diamond tip bit. Be patient and be careful to not put too much pressure on your drill. You are not going thru wood! Expect this to take maybe 10+ minutes, using care all the way. Once the hole was big enough, the diamond tip bit did its job. Very satisfied. Worth the price vs. spending over $100 a contractor wanted to do the same.

Robuste, funzionano bene

Ottimo, come da descrizione

Jeder Bohrer ein Kraftpaket. Fliesen sind in 5-10 Sekunden durch. Der Bohrer hält - viele viele Male... Kühlen musste ich nicht bisher. Kein Vergleich zu Bosch und Co. - welche deutlich schlechter und kurzlebiger sind. Diese Bohrer hier funktionieren einfach - ich bin total begeistert! Das Beste: habe noch 7 übrig als Reserve zum Preis von einem Bosch ;)

Perçage dans le gré seram très très facile !

La meilleure mèche pour percer la porcelaine, avec une seule mèche,j’ai effectué 8 percages en moins de. 20 min. Bravos