These easy to use, removable wheels can be added to any Rhino Trunk that already has the wheel plates installed from the factory. The steel and rubber wheels can be added or removed from a Rhino Trunk in a matter of seconds with a twist of the wrist. Unlike other wheel systems, Rhino's durable wheels do not add any additional height to the trunk. In fact, you don't even need to lift up the trunk to attach them. Each kit comes with two wheels and a sachet to store them in.