Pack of 8 Flap Discs, 125mm Flap Discs, Grit 40/60/80/120, Disc Fans, Sanding Discs for Burr Removal, Polishing, Rust, Finishing - Blue The discs are composed of radially overlapping abrasive flaps. The arrangement of the flaps guarantees great flexibility and high grinding performance.These sanding discs are made of high-quality zirconium corundum sandpaper, ensuring greater work efficiency.High cutting performance and excellent service life with good grinding results.Aging even with low contact pressure.Suitable for stainless steel, metal (e.g. rust), wood, old paint removal, plastic, etc.Material: stainless steel, zirconium corundum Diameter: 125 mm Bore diameter: 22.23 mm Maximum speed: 12200 rpm Grain size: 40/60/80/120 The smaller the number, the more grains there are, the coarser it is.The greater the number of grains, the finer it is.Package: 2 * Flap discs with 40 grit 2 * Flap discs with 60 grit 2 * Flap discs with 80 grit 2 * Flap discs with 120 grit