The Dayton Parts Trailer Leaf Spring is a multi-leaf spring with a width of 4.00" and a spring pack thickness of 3.12". This high-quality trailer leaf spring is designed to provide reliable and consistent performance, even under the most demanding conditions. With a maximum load capacity of 15,000 lbs, this trailer leaf spring is perfect for heavy duty trailers that need to carry large loads. The spring is constructed from high-quality materials, ensuring that it is durable and long-lasting. The 7 leaves in the construction of the spring provide superior support and stability, ensuring that your trailer stays on the road and performs at its best. Whether you're hauling heavy equipment or transporting goods across long distances, the trailer leaf spring is the perfect choice for your trailer. With its superior construction and high load capacity, this spring is designed to provide reliable and consistent performance, even under the most challenging conditions. Invest in the trailer leaf spring today and experience the difference in your trailer's performance. FleetPride is your First Click in Heavy Duty®.