Fasten the CargoSmart Motorcycle Wheel Chock to your trailer floor to help stabilize your bike when on the move. Simply clip the wheel chock's spring-loaded fittings into the X-Track® or E-Track system for a safe and secure connection. The connectors allow you to easily move or completely remove the wheel chock as organization changes are needed. Use the mounting holes to permanently attach the wheel chock to the trailer floor. To properly secure your motorcycle, always use with tie down straps.