Features: Fits Your RV & Trailer: Each jack withstand weight up to 6000 lbs/2.72 tons.The RV jack stands are not limited to just RVs; trailers and campers are also well-supported. More Stable: Each set includes four jacks. The triangular support structure and square base are more stable.Recommend placing wood or concrete blocks under jacks for better use. Height Adjustable: The RV stabilizing jack can be easily adjusted from 11" to 17" (280-440 mm) by turning its T-handle, making it user-friendly and hassle-free to use. Durable: The jack stands made from robust aluminum alloy,against corrosion and rust. The screw adopts 20# galvanized steel, ensuring resilience against impacts, wear, and tear. Lightweight and Portable: These rv stabilizer jacks are compact and lightweight.They can be compacted and nested together for easy storage and carry when not in use. Specifications: Material: Aluminum Alloy Standard Withstand Weight: 1 ton / 2200 lbs Max Withstand Weight: 2.7 tons / 6000 lbs Package Size: 170 * 170 * 320mm / 6.7 * 6.7 * 12.6in Package Weight: 3.2kg / 7.0 lbs Packing List: 4 * Stabilizer jacks