20pcs Flap Wheel - 10 Types of 6mm Pen Grit 80 Grinding Accessory. Diameter 15mm, 20mm, 25mm, 30mm, 40mm, 50mm, 60mm, 80mm. Flap grinder for light deburring work, removing tarnish, stains and oxidation, oxides on weld seams. Fan abrasive wheels are made only from high-quality abrasive cloth on a thick cotton cloth backing. This gives them superior durability and greater flexibility. Abrasive brush for drills and portable machines. Like a drill, cordless screwdriver, or die grinder. Thanks to the flexibility of the abrasive, the brush tips adapt optimally to the surface contour and prevent edge grinding. Specially for grinding metal and wood on flat and curved surfaces. The 1/4 shank makes these abrasive wheels suitable as sanding wheels for electric drills, cordless drills, and grinders. Before use, soak the gauze in 40°-60°C water for 2-3 minutes to fully moisten the gauze, increasing the toughness. Pay attention to the direction of the blades when installing and avoid the inability