The Ridge Ryder Door Mount Towing Mirror is a premium quality, heavy duty towing mirror. It features an adjustable ratchet mechanism and wide mounting plates to reduce vibration and provide excellent stability. It is the ideal choice for most 4WDs and SUV's. It provides superior rear vision and is ideal when towing large trailers, house floats, boats and caravans. Installation is simple and requires no tools. This item is sold individually and not only makes driving safe for you and all your passengers, but also provides a much needed heightened safety element for the other drivers on the road as well.