The Tuff-Grit Coated Abrasives A/O 60 Grit 5/8-11 5″ Fiber Disc 18486 is a high-quality set of sanding discs suitable for right-angle and angle grinders. Made with durable Zirconia Alumina abrasive material, these discs are designed for aggressive stock removal, blending, grinding, and finishing tasks. With a maximum R.P.M. of 12,200 and a thickness of 0.8mm, these blue discs come in a pack of 25 and are backed by a 2-year manufacturer warranty. The closed coat design and resin over resin bond ensure long-lasting performance on stainless steel, nickel alloys, and high nickel alloys. Ideal for various sanding grades from coarse to fine, these fiber discs are a reliable choice for any workshop.