? 2PCS 25" Heavy Duty Tender Spring Kit with Hook 3-in-1 Hose Holder for Semi Trucks, Trailers, and Tractors ? FUNCTION These tracker tender kits are designed for all semi trucks, trailers, and tractors. They hold ABS and air power line hoses, pulling them upward to prevent dragging or wear. The spring acts as a buffer and protector, keeping your lines off the ground and extending their lifespan. Compatible replacements for: Phillips 17-145 Tectran 9421-1 and similar models. ? HEAVY-DUTY HOOK 9.5 mm (0.4?) carbon-steel D-shaped hook ? thicker than standard hooks for greater load bearing. Inner buckle design prevents accidental loosening, ensuring a secure hold even under vibration. ? NO-LOOSE CLAMP HOLDER Widened clamp design prevents washer slippage. Lock-nut mounting keeps hoses and wiring fixed over time. Staggered side design allows stronger, more stable grip of wires and hoses. ?? DURABLE HIGH-ELASTICITY SPRING Made from premium carbon steel with excellent elasticity and toughness. Colored zinc-plated surface resists rust, corrosion, and weathering. Performs reliably in both high and low temperatures ? built for heavy-duty trucking environments. ? EASY INSTALLATION Quick, no-hassle installation ? replace in under 5 minutes. Perfect fit for 3-in-1 ABS and air power line hoses on tractors and trailers. ? Product Description Are you still worried about the wear and tear on your semi-truck?s electrical and air lines? Protect your investment with this heavy-duty tender spring kit ? designed to secure, organize, and extend the life of your 3-in-1 air and ABS lines.