Eagle U102-0400 - 9x11 Silicon Carbide Flexible-Back Waterproof Sheets - Grit P400 - (Job-Pak) - 5 Sheets/Pack - 1 Pack
The most reputable wet sanding paper of the world for its durability, speed, and extremely uniform abrasive grains. Sharp silicon carbide abrasive grain is resin-over-resin bonded on a highly flexible anti-slip backing which requires no pre-soaking before sanding.