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Zirconia edger discs deliver aggressive grinding and shaping performance for hardwood floor finishing. The 36-grit formulation removes old finishes, stains, and surface imperfections efficiently while maintaining consistent cutting action across the disc. Zirconia abrasive material resists heat buildup and loading, extending disc life and reducing replacement frequency. Ideal for initial sanding passes and heavy stock removal on edging machines. This box contains multiple discs for continuous workflow on residential and commercial flooring projects.