The MGM Brakes Heavy Duty Steel Non-Pressure Brake Chamber is designed to provide superior performance and reliability in the most demanding applications. This chamber features nylon reinforced diaphragms for heavy duty use. The tamper resistant parking chamber design ensures that the chamber is secure and protected from tampering. The corrosion fighter composite spring guide ensures that the chamber is protected from corrosion and wear. FleetPride is your First Click in Heavy Duty®.