Product Details The Meritor Automatic Slack Adjuster is designed to shorten stopping distance and provide durable performance in all conditions. This stroke sensing adjuster automatically adjusts the brake based on the drum brake pushrod stroke length, improving the overall performance of the braking system. With its reliable performance and easy installation, this slack adjuster is the perfect choice for your vehicle.FleetPride is your First Click in Heavy Duty®. Features Stroke sensing adjuster adjusts brake automatically based on drum brake pushrod stroke length Improves overall performance of the braking system by ensuring that brakes are always properly adjusted Uses yellow piston For use on drum brakes with a type 24 brake chamber For use on drum brakes with a type 24 or type 30 brake chamber applications