DIAREX NINJA FLAP DISK
Sounds crazy, but these disks that are 115mm in diameter, fit on a grinder and bring a New level of ease in grinding natural and engineered stone, porcelain and sintered stone.
Available in 60 grit and 120 grit are in high demand
Made by Diarex, and has the strength of the company backing them
Come in store and try them for yourself