Product Details: Equip your semi truck to be Ready for the Road Ahead™, with the Bendix Stand-off Adjustment Kit, a key set that optimizes air valve performance. Thanks to its ability to adjust the gap between a valve's actuator and the valve seat, this kit is the ideal solution for operators looking to maximize pneumatic performance. Fashioned with long-lasting and durable materials for extended use with commercial vehicles. FleetPride is your First Click in Heavy Duty®.