Test gasoline fuel pump pressure on most fuel injection equipped vehicle. Gauge has needed pressure release valve with long hose to allow safe recovery of fuel after pressure checking. Components fitted with quick coupling system and safety valve to prevent inadvertent discharge of fuel under pressure. Couplers, adapters, hoses and fittings for modern Schrader test ports. Tool Indicates if fuel pump is defective or inconsistent in pressure flow. Includes assorted hoses with brass fittings, brass fittings and steel clamps to work on most vehicles.