Gator 6-Pack 1/2" x 1/2" 120-Grit Fine Resin Cloth Sleeve Drum Sander Refills are designed for sanding and grinding irregular shapes, contours, and hard-to-reach areas. These premium double resin bonded aluminum oxide sanding drums are ideal for use on wood, metal, fiberglass, and painted surfaces. The resin-bonded construction resists heat and humidity for longer life, while the premium P-grade aluminum oxide grain offers a consistent scratch pattern and creates a finer finish. Made of heavy X-weight cloth for maximum strength, these sanding drums are built to last. Aluminum oxide durable grains are recommended by professionals for sanding a wide variety of surfaces.