Corundum (aluminum oxide), suitable for long-neck grinders LHW (#8.96 82 90/0). For grinding and smoothing malleable cast iron, grey cast iron, stainless steel, steel, non-ferrous metals, wood, and plastic. Item Article Design Flap disc Outer diameter 50.0 mm Area of application Stainless steel, Cast iron, Wood, Plastic, Non-ferrous metals, Steel Main color brown Inner diameter 10.0 mm Grit P100 Abrasive Aluminum oxide Version Grinding/polishing agent Tool holder Micromot