This BAL RV Manual Trailer Stabilizer Jack Stand is use to stabilize campers. It has a static load capacity of 4500 pounds and sold in pairs. Specifications•Used For: Levels And Stabilize Travel Trailers And Fifth Wheel Trailers•Type: Cross Frame Stabilizer•Operation Type: Manual•Shape: Square•Weight Capacity: 4500 Pound•Travel Length: 22 Inch•Color/ Finish: Black Electro Coated•Included Crank Handle: Yes•Quantity: Set Of 2 Manual 22 Inch Set of Two | BAL RV Manual Trailer Stabilizer Jack Stand, 22", 4500 lb Capacity