High Quality Metal Material Made of high quality aluminum alloy and spring steel, high strength, not easy to deform, not easy to rust and corrode, durable and can serve you for a long time. It can make your cycling tour a better experience . Spring to Improve Cushioning The spring design of this shock absorber can better cushion shocks, vibrations, etc. Whether on smooth roads, rough mountain roads or country trails, you can receive less shock. NOTE: Please make sure the screws are tightened when installing, if not, there may be abnormal noises 1500 lb Load BearingThe bicycle shock has a 1500 lb load capacity, which can easily support your weight and cushion you during the ride, making your ride safer. You don't need to worry about product damage caused by the charging problem. NOTE: The friction of some plastic parts may also produce a little noise. You can drip some lubricating oil in it, and there will be no noise. Suitable for Most Bikes The good performance of the bicycle shock absorber makes the product a perfect replacement for the old normal performance shock absorber on your bicycle. You can use it on bicycles, mountain bikes, electric vehicles, mountain bikes and other bicycles that require shock absorption. It can make your bike trip more comfortable and make your bike ride less strenuous. Size: The spring is about 8mm thick Quantity: 1Pc Note: Due to differences in light and screen settings, the actual color may be slightly different from the picture. Please allow for small size differences due to differences in manual measurements.