Feature:1. The spring has an adjustable design, so you can adjust the length yourself. The opening height of the truck depends on the length of the spring.2. The spring is very practical, can avoid opening the trunk by hand, and has high practicability.3. If your trunk has a remote control function and cannot be fully opened, you can install it and the trunk will automatically be fully opened.4. Easy to install, just hang it on the trunk of the car, and complete, which is very simple.5. Made of high qualiy material of stainless steel, which makes it durable and have high reliability.Specification:Item Type: Car Trunk Boot Lid Automatic Lifting SpringMaterial: Stainless SteelFitment: Universal.Package List:2 x SpringNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.1. the product is not suitable for models with automatic trunk lift function.2. if the customer's trunk is auto‑lift type, one side is damaged, it is also not suitable. Only suitable for models without automatic lift function.