The Roadworks Freightliner Classic FLD 120 Box Sleeper Vertical Side Wing Sleeper is a practical and durable addition to your truck. Made of stainless steel and sold in pairs, this Freightliner Wing Extension is designed to fit most Freightliner Classic and FLD makes and models. It is perfect for trucks without rubber tails, providing a sleek and functional upgrade to your vehicle. Improve the practicality and aesthetics of your truck with this easy-to-install wing extension.