A perfect way to keep shelves tidy, these supports are made of heavy-gauge steel. Jumbo 6" x 9" high for tall books. Smooth "coined" edges on both inner and outer arcs provide extra safety. Featuring a non-skid, non-scratch polyurethane base. Sold as a pair. Black. One Pair of Bookends. Economical way to keep books organized. Heavy guage steel with durable black finish. Smooth "coined" edges for extra safety. School Smart - A Great Value.