BF-105 is a horseshoe bed rail fastener done in cast iron with a matt black finish. This item is used to attach the side rails of a wooden bed to it's head and foot board. The post anchor is 4 9/16"high by 1 3/16" wide. The rail hook is 2 5/8" high by 2 11/16" wide. Each set consists of four post anchors and four rail hooks which is enough to do one complete bed. Sold only in complete sets. Screws not included.