The Bona Green Ceramic 6" Disc 80 Grit is a high-performance abrasive disc designed for aggressive wood floor sanding. Part of Bona's "BETTER" sanding system, it features a unique blend of ceramic and aluminum oxide grains, making it extremely durable and efficient for stock removal and leveling surfaces. These discs are engineered to cut 30% faster and last up to 50% longer than competitive ceramic abrasives. The 80-grit size is typically used for medium sanding steps to refine the surface after coarse grits (like 36 or 40) and before fine finishing grits.