A grinding medium with a medium 120 grit made of white aluminum oxide. The white aluminum oxide features a finer and more open grain structure, making it excellent not only for wood and metal surfaces but also for paints and lacquers. A long-lasting grinding performance is ensured by the grid structure. The grinding dust is removed much more effectively from the workpieces, preventing any negative impact on the grinding grain. The existing hook-and-loop attachment allows for quick and easy fastening to the machine. To guarantee optimal grip and the longevity of the grinding medium, the optionally available grinding disc guard must be installed between the grinding medium and the grinding disc.