A unique feature with this product is the ability to flip the system upright for storage. One of the greatest problems with owning a trailer, especially in a restricted neighborhood is finding a place to store it. If you leave the trailer out in sight, you start getting the nasty letters telling you to move it. The Swivelwheel 46 system has an optional flip-up adapter that allows you to turn the system upright and roll it into the garage, against the wall. This is a one person operation.