Insta-Trim is the original hydraulic boat leveler that provides a better ride every time you leave the dock. Easy to install, Insta-Trim boat levelers are strong, durable and come in lengths to fit most boats. Custom sizes are available also, so any boating enthusiast can enjoy a superior ride. Insta-Trim has been committed to the boating industry for over 40-years always assuring you of a quality duct with excellent performance.