Heavy-Duty Capacity:; 3500 lbs electric trailer jack easily lifts trailers, RVs, boats, and more, providing reliable support for all your towing needs.Durable & Reliable:; Features advanced ball screw design and carbon steel construction with protective coating for smooth performance and long-lasting durability in harsh outdoor conditions.Complete Accessories:; Comes with a sunshade waterproof cover for UV/rain protection and a 90° rotating installation hole to avoid tailgate interference for easy setup.Adjustable Height:; Multi-level height adjustment (10"–34") keeps your trailer level on any surface—suitable for both high and low-profile trailers.Versatile & Emergency Ready:; Ideal for RV, horse, and utility trailers; includes manual hand crank for emergency use during power outages.