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The 3M Disc Resinite 12 Grit 21041 is a heavy-duty sanding disc engineered for aggressive material removal on edge sanding applications. Its coarse 12-grit resinite abrasive delivers rapid stock reduction on hardwood, concrete, and composite surfaces, making it ideal for floor preparation and refinishing projects. The durable resinite bond resists loading and maintains consistent cutting performance throughout the disc's lifespan. Designed for compatibility with 21041 edger sanders, this disc provides professional-grade results for contractors and flooring specialists demanding reliable performance and efficiency.