20-piece flap wheel set - 10 different grits, 6mm to 80 grit, grinding accessory. Diameters: 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 80mm. Flap wheel for light deburring, removing tarnish, stains, and oxidation, including oxides on weld seams. Fan abrasive wheel is made exclusively from high-quality abrasive cloth on a thick cotton backing. This gives it superior durability and flexibility. Abrasive brush for drills and portable power tools, such as drills, cordless screwdrivers, and straight grinders. Thanks to the abrasive's flexibility, the brush tips adapt perfectly to the surface contours and prevent sanding of edges. Specifically designed for grinding metal and wood on flat and curved surfaces. The 1/4" shank makes these abrasive wheels usable as sanding wheels for electric drills, cordless drills, and angle grinders. Before use, soak the gauze in water at 40°-60°C for 2 to 3 minutes to thoroughly moisten it and increase its toughness. Pay attention to the blade direction