4" x 24" Aluminum Oxide Closed Coat Sanding Belts Closed coat is made with aluminum oxide grain, is full resin bond, has an "X" weight backing, is waterproof and closed coat. This material is used for aluminum, steel, composite and solid surface. Great as an all purpose abrasive.
4" x 24" Aluminum Oxide Open Coat Sanding Belts Open coat is made with aluminum oxide grain, is full resin bond, has an "X" weight backing and is open coat. This material is used for composite materials and wood. The open coat prevents loading.
