These 320 grit sandpaper sheets (9x11 inches, pack of 50) feature durable silicon carbide abrasive on waterproof latex-backed C-weight paper with a resin bond. Designed for both wet and dry use, they deliver consistent, fine sanding results across multiple surfaces. Ideal for woodworking, metalworking, automotive refinishing, and detailed DIY projects, they efficiently smooth wood, remove rust from metal, and perfect automotive paintwork. Their versatility extends to delicate materials like ceramics and plastic, providing precise control for a polished finish. Reliable and professional-grade, these sheets support a wide range of sanding needs with ease.