The United Abrasives 71259 Encore Type 29 Zirconium Flap Disc is a high-quality tool designed for metalworking applications such as sanding, grinding, and finishing. With a diameter of 6 inches and a grit of 80, this flap disc is durable and efficient for removing material from various types of metal including stainless steel and aluminum. The pack includes 10 units, making it suitable for multiple projects without the need to constantly replenish your supply. The 5/8-11" hub ensures easy installation and compatibility with a wide range of machinery.