Unique Design Stops Front-To-Back And Side-To-Side Motion Powerful, Dual Electric Motors Utilize 12 Volt Operation Fits Most Towable RV Frame Types Extra Large Footpads. Provide Firm Foundation Universal Connecting Bracket .Included Independent Lifting And Leveling. At The Flip Of A Switch Lifts Up To 6,000 Lb Per Leg (See Chart) Durable Powder Coated Finish Fits low profile travel trailers, 5th Wheels and Class C motor homes with frames from 42" - 77" and features 22" of leg extension. Recommended for the rear only.