Gold's adhesive sanding discs have a special sharp, durable aluminum oxide grain that gives you a fast and exceptionally long-lasting cut. Durable aluminum oxide, combined with urea resin over glue bonds, and an open coat create a high performance sandpaper that's the envy of the industry. Features: Resin bonding Provides superior grain support Special stearate coating Maximizes resistance to clogging and loading Excellent grain distribution Provides consistent quality performance Flexible C/D weight latex backing combines toughness with flexibility