Prepare your semi truck with improved suspension support for the journey ahead, with the OTR 5" x 3/4" Round Sh Overslung Spring Seat with Expertise Built In. Thanks to its robust design, this replacement part is the ideal piece to dampen the vibrations and jolts of the leaf spring system. Crafted with ultra-durable materials to withstand heavy loads and regular use. FleetPride is your First Click in Heavy Duty.