The Boater Sports Trailer Jack Wheel is an ideal accessory to hold on while loading or unloading parked trailers. This heavy-duty trailer wheel is made of high-grade plastic material to provide dependable service for many years to come. Without much maintenance, this accessory offers lasting use, even when used frequently. Designed to reduce frustration and enhance safety, this round trailer jack wheel can be used anytime, be it loading or unloading your trailer.