Compatible with Festool RO 90 DX sander. P40 grit abrasives for heavy-duty applications, pack of 50. A premium abrasive composed of hardened Aluminum Oxide and Ceramic Grit for scratch resistant coatings and high VOC coatings. Festool offers a fully integrated sanding solution for all your applications, from aggressive stock removal to superfine, finish sanding. With a complete line of abrasives in a wide assortment of different types and grits ranging from 24 to 4,000, Festool has the perfect paper to meet your specific application needs. Festool abrasives, with their high tech coatings, provide maximum resistance to clogging and smearing, which means longer lasting abrasives and less rework. Save money by reducing costs and achieve consistent, high-quality results.