PRC2564 Features: * Bi-directional flush joint runs smoothly in both directions * Made with heavy-duty, extra weight cloth to resist tearing and stretching * Durable resin system resists heat and humidity for longer life * Made with aluminum oxide grain * Used on wood, metal, fiberglass, plastic, painted surfaces * 100 grit * 2-1/2"" x 14"" * 2 per card Construction: * Porter-Cable sandpaper is designed to the highest quality to meet the need of today"s woodworker and construction professionals