Ultra Power Twin II Stabilizer. The stabilizer that lifts levels and stabilizes, all at the same time! The Ultra Power Twin II conveniently levels and stabilizes your towable RV, plus adds the capacity to actually lift the trailer with up to 6000 pounds of rugged power. Each side can be elevated to a height of 30 inches independently or simultaneously. The Ultra Power Twin II is the only stabilizer that stops front-to-back motion and side-to-side motion at the same time. It's truly the ultimate in stabilization technology and it's perfect for any RV. The ultimate in stabilization technology and it's perfect for any RV Ultra Power Twin II Stabilizer The Ultra Power Twin II is the only stabilizer that stops front-to-back motion and side-to-side motion at the same time Item may ship in more than one box and may arrive separately MODEL NO - 39-941705