The Bona 6" Black 80 Grit Discs are high-performance finishing abrasives designed specifically for hardwood floor sanding. Sold in boxes of 50, these discs utilize silicon-carbide grains that continually break down into fine cutting points during use. This unique action makes them ideal for the final sanding stages before staining or oiling, as they produce a superior surface quality that enhances color richness and depth.