features: Automatic mainline spring lifting device. This spring is very practical and helps to avoid opening the trunk of the car by hand. The opening height of the trunk depends on the length of the spring. This spring is adjustable and you can adjust the length by yourself. Easy to install, just insert it into the trunk of the car. Specifications: Material: metal Size: minimum 15cm, maximum length: 24cm/9.44in Color: as shown in the figure Package includes: 2 pieces of trunk lifting spring and 2 pieces of spring clips be careful: 1. Please allow a little error due to manual measurement. Please make sure you don't mind before bidding. 2. The color may vary depending on the display. Please understand. be careful: Hello, please pay attention to your shipping address when purchasing products. If your receiving information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly.