This 5 In. round finishing sander has an ergonomic design for maximum comfort and quick-change hook and loop holding system. Abrasive film sanding discs feature super sharp, fast cutting grain, durable film backing that resists tearing and edge wear, and anti-clog coating to prevent particle build-up to provide superior finishing results. 4 times performance and life. Included are 8 sanding discs ranging from extra fine to extreme removal.