1Main Function: Air spring can level your load, eliminate sag, sway, and bottoming out, and give your truck, van, or Suv a safer, more comfortable ride. 2Shock Absorber: The 6bar expansion diameter is as high as 120, which can effectively achieve the shock absorption effect and increase the comfort during driving. 3Important Parameters: The working range is 75?135, the working pressure is 0.1?1.0mpa, and the burst pressure is 2.5mpa. All trucks can be used. 4Durable Material: Made of rubber and metal materials, they are resistant to wear and tear and provide long term, reliable service. 5Good Replacement: Air spring has undergone strict inspection and can directly replace the old air spring with simple installation.