3M 431Q Wet or Dry Sandpaper Sheet – 80 Grit Silicon Carbide, 9″ x 11″, Heavy Material Removal

The 3M 431Q 80 Grit Wet or Dry Sandpaper Sheet is engineered for aggressive material removal and heavy surface preparation. Coated with sharp, fast-cutting silicon carbide mineral, this 9″ x 11″ sheet is ideal for stripping paint, leveling filler, smoothing rough surfaces, and removing rust or corrosion on metal, wood, and composite materials. Its coarse grit makes it perfect for demanding jobs where fast results are essential. Designed for both wet and dry sanding, the waterproof backing helps reduce dust while improving abrasive longevity and surface quality. The tear- and moisture-resistant paper backing ensures flexibility and strength, making it a trusted choice for auto body work, industrial projects, and heavy-duty DIY applications.