Adjustable: Adjusts from 19" to 42" in height, Supports up to 5000 lbs each Durable: Quick lift heavy duty RV slide out support made of heavy-duty steel and zinc powder-coating finish. The support pad is made of TPE, which will not mar the side of your RV Quick-Lift: Multiple holes slide out rails and tethered pin allow the RV slide out stabilizer to ascend or descend quickly. Provide your RV patio additional support. Stabilty: RV patio supports with support pad, handle and tethered pin, provides additional support to toy hauler patios and flat bottom slide outs. Easy to Install: Put it under the slide out rail, telescope the stand tube, put in the pin, turn the fine adjustment bar and it will contact the rail, turn a few times more to lift rail. Tnyeobae Heavy Duty RV Slide Out Support Made of heavy-duty steel, these RV Trailer Stabilizer Jacks provide maximum strength. Each Camper Slide Out Stabilizer is finished with a zinc powder-coating,resistance to rust and corrosion. No assembly required. From the lowest setting, use the folding handle to raise the bracket slowly to meet the RV slide out supports bars. Specification: Material:Steel Rated Load: 5000 lbs Each Quantity: 2 supports