APPLICATIONS: Compact universal alternative to application specific adapters required for pressure testing automotive cooling systems. Compact universal alternative to application specific adapters required for pressure testing Replaces more than 20 individual cooling system pressure test adapters for cars, vans, light and heavy-duty trucks Patent-pending cam mechanism ensures an air-tight seal with radiator and coolant bottle necks Compatible with Stant-style cooling system pressure pumps Compact one-piece design fits conveniently in tool box Includes Universal Radiator Test Adapter (1-piece) Mityvac MV4508 Universal Radiator Adapter