Maximum Speed for Grinding Metal - The Prisma Ceramic Fibre Disc, R781 Metal delivers speed and a consistent cut. The optimal triangular shape of the prisma ceramic grain allows the disc to cleanly cut through the metal, delivering up to 40% faster stock removal compared to crushed ceramic discs. The special structure of Prisma Ceramic grain also gives a perfect self-sharpening effect which leads to a consistent grinding result. With 16 mm bore for standard locking nut angle grinders. Features and Benefits • Maximum Speed for Grinding Metal • Prisma Ceramic Fibre Discs, R781 Metal - grinding metal with maximum speed • Prisma Ceramic Technology enables the R781 to grind metal 40% faster than a traditional ceramic disc. Specifications Disc diameter: 100mm Bore diameter: 16,00mm Bore size: 16,00mm Grit: 80