Boater Sports Trailer Jacks are built tough for maximum performance and durability. EDC Silver coating provides supreme corrosion resistance against all elements. The power handle provides excellent grip and stays smooth turning using the built-in grease fitting. Hardened steel gears are squared to prevent stripping. Easily swing to up or down position with double pin locking mechanism. Mag wheel for easy mobility. All swing-up jacks include mounting hardware and a universal mounting bracket capable of fitting any 3", 4" or 5" trailer tongue channel.