Double-eye leaf spring acts as part of a trailer's suspension system by providing an attachment point for an 8,000-lb axle. Spring flexes to resist shock and also ensures a smooth ride. Includes ... bushing: 11/16" Leaf thickness: 3/8" Number of leaves: 7 Additional dimensions: see table Part Number A B C D 072-079-00 12-7/16" - 24-7/8" 1-3/4" Note: To ensure proper axle