"I've only used the drill bit on one job (10 holes) which was 10mm ceramic tiles. The drill bit went through very quick and clean however not very easy to start the drilling as the bit wouldn't stop wandering. I found myself using an old ceramic bit which still starts the holes effortlessly to mark all holes, then swapped to the Marcrist."
"I've tried cheap bits and more expensive Armeg bits, on porcelain tiles before and they've been useless after a dozen holes and very very time consuming. Bought one of these to try, have fitted 2 bathrooms, equalling 30 holes in grade 5, 9mm thick porcelain. As an added bonus using an electric drill for constant power each hole took a maximum of 2 mins to cut. Will never buy anything else."
"Bought this bit after wasting time and money on conventional tile bits, it worked a treat and went through my porcelain tiles a lot quicker. The only disappointment was that I only got 16 holes out of it and not the claimed 30-70 holes which doesn't make it very good value for money!! The porcelain tiles I have are very hard though so perhaps that's a mitigating factor. Without it though I wouldn't have been able to complete the job."
"Having gone through a few bits for the bathroom decided to speak to the team at Screwfix. They recommend this product and I went for it. it does exactly what it's supposed too, once you got the starting angle right you're off."