3M Wetordry Paper Sheet 431Q features extra-fast cutting silicon carbide on a strong C-weight, waterproof paper backing to provide superior finishing for both wet and dry applications on a variety of substrates, including paint, primer, gel coat, metal, and wood.

• Versatile sheet can be used wet or dry on paint, primer, gel coat, metal, and wood finishes
• Strong C-weight paper backing provides durability for either hand or machine sanding
• Sheet is standard 9 x 11 and can be sized according to task