Norton 4" X 2-3/4" X 1" Four Sided Sanding SpongeThe Norton 4" x 2 3 4" x 1" Four Sided Sanding Sponge offers a flexible abrasive coated foam designed for effective sanding of curved, contoured, or flat surfaces on wood, metal, paint, plastic, ceramics, and drywall. Its firm sponge with angled sides enables precise sanding inside corners and hard to reach crevices. Featuring abrasive coating on all four sides, it is washable for extended usesimply rinse and reuse to maintain optimal performance.