A leaf spring is a type of suspension system commonly used in vehicles, particularly in trucks and older cars. It consists of several layers of metal strips, or leaves, that are curved and stacked together. This design allows the spring to flex and absorb shocks from the road, providing a smoother ride and better load-carrying capacity. Leaf springs are often made from steel and can be found in both front and rear suspensions. They are known for their durability and simplicity, making them a popular choice for heavy-duty applications. Their design also helps maintain vehicle stability, especially when carrying heavy loads.