Eaz Lift screw on sway controls minimise the sway caused by passing trucks & sudden gusts of wind. It works by using a double friction disc brake principle which provides instant sway reduction & thus improves handling. They are attached with easy socket & spring clip connectors which also make them easy to remove for convenient storage. The slide bar is zinc plated which ensures consistent smooth gliding action. Note: Trailers/ caravans over 24’ may require two sway controls. Eaz Lift Screw-On Sway Control - Passenger Side/Left Hand Mounted