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Bona Green Ceramic Siafast Discs deliver professional-grade sanding performance for hardwood floor finishing and refinishing projects. These 5-inch discs feature ceramic grain technology that cuts faster and lasts longer than conventional abrasives, reducing sanding time and material costs. The 80-grit specification provides aggressive stock removal ideal for initial sanding passes and leveling uneven surfaces. Each box contains 50 discs, offering substantial value for contractors and flooring professionals. Compatible with standard orbital sanders, these durable discs maintain consistent cutting action throughout their lifespan, ensuring uniform results across large floor areas.