Lippert 335852 Straptek Tensioner Kit

Hook-up faster: Straptek™ was designed to allow the spring bars to be set or adjusted without having to raise the tow vehicle. This saves time and energy when hooking and unhooking your trailer. Simply couple the trailer, set the tension and raise the jack.
Safer adjustments: Once your spring bar tension is set, Straptek™ can be easily adjusted by tightening or loosening the straps using a socket wrench. Better sway control: The low profile design allows for superior sway control; only three inches of movement on either side of the trailer. A typical WDS can have as much as 7-1/2 inches of sway on each side. Low profile, totally silent: There are no chains to worry about. Straptek™ is affxed to the A-frame without interference from propane tanks or other accessories. Straptek is also totally silent. There are no cracking or popping noises from chains and snap-up hooks.