Prepare your semi to be Ready for the Road Ahead™, with the Dayton Parts 30" x 30" Leaf Spring Repair Plate that ensures a leaf spring is strong and reliable. By utilizing a specialized design, this repair plate is able to reinforce a broken or damaged leaf spring, and return the suspension to its original quality. Built with durable materials to restore a vehicle's load-bearing capacity and provide a smoother ride. FleetPride is your First Click in Heavy Duty®.