capacity and sturdy design Our 1500LB/679KG Wheel Side Roll Trailer Jack Support is built to handle heavy loads with ease, providing reliable support for trailers, yachts, and equipment. Smooth and effortless maneuverability Equipped with 6 to 8 inch wheels, this jack delivers smooth mobility and easy positioning when moving a trailer, boat, truck, or automotive setup. Construction and surface treatment Constructed with robust materials and finished with electric galvanized surface treatment for corrosion resistance and long service life. Adjustable height and stroke length Features a stroke length of 254 mm and adjustable height options, offering versatile functionality to match varying trailer heights and ground conditions. Key specifications Capacity: 1500 lb (679 kg) Wheel options: 6' to 8' wheels Stroke length: 254 mm Surface treatment: electric galvanized Type: Wheel Side Roll Trailer Jack Support Use scenarios Boat trailer docking or launching: stabilizes and positions the trailer precisely for safe loading and unloading of a yacht or boat. Vehicle and equipment transport: supports and guides a trailer carrying trucks, cars, or heavy equipment during loading, unloading, or parking. Onsite leveling and adjustments:Provides adjustable height to accommodate uneven ground, making maintenance, tire changes, or tire rotations easier and safer.