?Dazakoot SingleTender Spring?16? Single tender spring kits is designed to improve load handling capabilities of the vehicle's suspension system. The spring acts as a buffer and protection, prevent lines from being dragged to the ground. Replaces Tectran 9820-1, Tectran 9420-1, Tramec Sloan 580111-1, Phillips 17-420 and so on. ?Large Tension Air Line Spring Kit?Constructed from high-quality carbon steel, ensuring excellent durability, elasticity, and toughness. It can withstand both high and low temperatures without compromising its performance. The zinc surface plating provides effective rust prevention and protection against rain corrosion. Tender spring is equipped with a sturdy plastic protective sleeve to prevent the spring from tangling with wires and air hoses, while also shielding it from direct sunlight exposure. ?Improved Stability and Control? By adding an additional set of springs or auxiliary springs, they provide extra support and help distribute the weight of heavy loads more evenly. movement, improving the vehicle's handling characteristics and making it easier to maneuver, especially during turns or on uneven terrain. ?High Quality Hanger Bracket?The air line clamps are constructed from high-quality 304 premium stainless steel material, ensuring durability and resistance to rust, corrosion, and water damage. These clamps are specifically designed with rubber cushioning for added protection. ?Easy Installation and Compatibility? Tender spring kits are generally designed for easy installation and compatibility with 3 in 1 air line kit for semi truck . We have an additional hook to accommodate various semi truck suspension rod diameters, you can according your vehicle's make, model, and suspension setup to ensure proper fitment and functionality. Product description 16" Single Tender Spring Kit for Semi Truck Tractor Trailer