With a patented special abralon method coating the sanding pads are designed specially for sanding rounded surfaces, corners, and sharp edges the Mirka Abralon Grit Silicon Carbide Sanding Pad comes included with (2) 500-Grit Sanding Pads, (2) 1000-Grit Sanding Pads, (2) 2000-Grit Sanding Pads, (2) 3000-Grit Sanding Pads, (2) 4000-Grit Sanding Pads. The Abralon creates a smooth sanding pattern on angled surfaces and edges. Ideal for all types of applications including Automotive Refinishing, Construction and Decoration, Wood Processing, Metal Processing, Composities Processing, Marine Industry, and Vehicle Manufacturing. Each Mirka Abralon Sanding Pad can be used on Aluminum, Hard wood, Mild Steel, Carbon Steel, Paint Sanding, Lacqueres, Plastics, Body Filler, Primer, Solid Surface, Stainless Steel, Steel, Copper Alloys, Brass, Bronze, and Glass Fibre.