These 400 grit sandpaper sheets measure 9x11 inches and come in a pack of 10, featuring durable silicon carbide abrasive for consistent, fine finishing. Designed for both wet and dry use, they are ideal for smoothing wood, metal, plastic, and ceramic surfaces with precision. The waterproof latex backing and resin bond ensure long-lasting performance, making these sheets perfect for detailed woodworking, automotive refinishing, and polishing tasks. Reliable and versatile, they provide professional-quality results for any surface refinement project.