EXTENSIVE APPLICATION: The CheeMuii tender spring kits are used to hold the air hoses and power cord, which can tighten these lines and spring plays a role in buffering and protection. And the air lines spring kits are suitable for truck, semi truck, trailer and Tractor. Replaces for Tectran 9421-2, for Automann 177.3007, for Tramec Sloan 451748, for Phillips 17-1482, for Velvac 580071 3IN1 AIR LINES HOLDER: The 3 in 1 air lines holder is made of heavy-duty widened stainless steel, and it is equipped with an anti-slip rubber pad, which can fix the air hose and electric power cord very well 3-HOLE CLAMP HOLDER: The 3-Hole Clamp Holder has a special widening design to effectively prevent the washers from sliding, and use it with the locking nut, which can fix the Air Hose and Power Cord very well GALVANIZED CARBON STEEL SPRING: The 25" heavy duty spring is made of high quality carbon steel with good elasticity and toughness, which can run normally and have a long service life at high intensity. And the surface of the spring is galvanized, which can prevent rust and corrosion PREMIUM WIDENED HOOK: Heavy-duty widened 2" wide hooks to fit large diameter crossbars, preventing hooks from being too small to use. And the surface has been painted to effectively prevent rust and corrosion Cheemuii 2 PCS 25" Single Tender Spring Kit with 3in1 Hose Holder and 3-Hole Clamp Holder Heavy Duty Tender Spring for Semi Truck Air Lines Kit 2 Style Air Lines Holders for Semi Truck Trailer Tractor