6 Inch Double Solid Wheel Sidewind Round Swivel Trailer Jack With Bolt On Capacity 650KG Jockey Wheel Boat RV Parts Accessories This trailer jack supports up to 1, 500 lbs of trailer tongue weight and includes bolt-on mounting hardware for secure attachment to the trailer tongue.It features dual 6-inch solid wheels for convenient mobility during coupling and positioning.The jack provides 10-3/8 inches of vertical adjustment and operates with a side-wind handle.Its retracted height is 12-5/8 inches and extends to 23 inches.Designed with a swivel bracket, the jack rotates upward to provide clearance while towing and locks in place with a heavy-duty pull pin.Constructed with a zinc-plated finish to resist corrosion from water, road salt, and other environmental elements.