A double-drop axle is a type of axle design used primarily in heavy-duty vehicles and trailers. This configuration features two drop sections along the axle, allowing for a lower ride height while maintaining a higher payload capacity. The double-drop design helps lower the center of gravity, which improves stability and handling, especially for transporting heavy or tall loads. This axle configuration is commonly found in flatbed trailers and specialized transport vehicles where height restrictions are a concern.