With an open-coat aluminum oxide grain, this paper sheet delivers an aggressive cut to swiftly smooth and even out a variety of surfaces, including wood, metal, plastic and fiberglass. From removing paint and other heavy materials to performing fine surface prep, these sheets are ideal for all phases of the sanding process. Durable C-weight backing makes these sheets excellent for use with sanding boards and blocks or hand sanding, and are great choices with homeowners and commercial contractors alike.