Review on 💎 6mm 50mm Ceramic Porcelain Rokrou Diamond by John Eaton

The set works well. The bits cut well and do their job. Take your time and don't push too hard. Keep water in the channels when cutting. Larger drill bits are a few millimeters shorter so the plug sits on the inside and hits the back and stops drilling. Hit the shank with a hammer and it knocks out the last few millimeters of granite underneath and pierces through it.