JRS JRS 900lbs Trailer Jack with Single Wheel, Adjustable 17.5" Lift Travel, Boat On for Boat RV Utility, Towing Single Wheel Built from high-strength steel to handle frequent towing, loading, and parking tasks while providing long-term durability and stability. Features an easy-to-turn crank handle that allows controlled lifting and lowering of the trailer tongue with minimal effort. Protective surface coating helps resist rust and corrosion, suitable for outdoor use and various weather conditions. Easy to install using standard mounting hardware (hardware may vary by model), with no complex modifications required. A practical accessory that improves trailer stability, reduces strain during coupling, and enhances overall towing safety. Designed to fit most utility trailers, boat trailers, caravans, and travel trailers with standard mounting brackets. JRS Trailer Jockey Wheel is an essential component designed to enhance the maneuverability and stability of trailers when they are not attached to a towing vehicle. This tool is crucial for positioning trailers precisely in tight spaces, such as during storage or when hitching to a vehicle. Made from durable materials, the jockey wheel can withstand the demands of both residential and commercial use, ensuring long-term reliability. The jockey wheel is typically equipped with a heavy-duty rubber or pneumatic tire that allows for smooth movement over various surfaces.