Professional-grade floor sanding discs built for contractors handling larger floor areas. The 19-inch diameter provides broader coverage, reducing the time needed to sand expansive hardwood or concrete surfaces. Silicon carbide grain maintains consistent cutting action throughout the disc life, and the open-coat construction resists loading when sanding through adhesives or old floor finishes. Heavy X-weight cloth backing stands up to the demands of commercial and residential floor restoration work. Each box contains 20 discs with a 2-inch center hole designed for standard floor sanding machines. Grit 80X delivers aggressive material removal for demanding preparation tasks.