Sanding Blocks and Refills are an important part of the Sandpaper & Abrasives category within Paint & Painting Supplies > Sandpaper & Abrasives > Sanding Blocks and Refills. National Supply Network offers a wide selection of professional-grade sanding blocks and refills for contractors, maintenance teams, warehouses, and industrial operations. Our catalog includes dependable products from trusted manufacturers designed to support durability, performance, and efficient day-to-day use.