Best used as a replacement parts for Prijon kayaks outfitted with this type of foot brace rail. Common as foot braces or for rudder foot controls. Two plastic rails, 15.75 inches long. Foot pads and mounting hardware are NOT included. Bolt holes are 14 3/8 inches OC plus a 3rd center bolt option. Instructions are not included, but the install is simple and straightforward (re-use original mounting hardware). Sold as a pair.