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).

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.

These diamond bits were good quality, drilled holes in ceramic with no issues, and were a good value. Allowed bit to cool fairly frequently.

Bits work well on porcelain tile. Low speed and light pressure

I was a bit skeptical (pun). These worked brilliantly. Be sure to start at an angle, maybe some duct tape will help with the slippage, for me it wasn't too bad. These cut through tiles very easily. the concrete bit works great after the tile is cut for the backing board. I will look for a set with other sizes like these now that I have some experience with them.

Great drill bits for securing grab bars in bathroom tile.

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.

works as advertised, dip drill bit occasionally in water

Robuste, funzionano bene

Ottimo, come da descrizione

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

Parfait pour la faïence dur

Son muy útiles y pueden perforar el piso cerámico en cuestión de segundos sin generar ningún daño