Rubber suspension

In this type of supension system 

in the middle Of the iron strip Two rubber Bug Vulcanize  

Is kept Seated 

In this bag for  press The air filling  Did facilitated  Compressore As soon as the push     Depressing air bag does it shock  Observer 

in this supension Because not having the sound At peast Place air bag Is set  

and air bag is stays  Lighter In weight 

 other contry of vehicle this type of suspension does it more than  use  this type of suspension