The ULTIMA Pump is a handheld pump with a durable steel body and silicone ergonomic grips creates an immediate, powerful suction. To release air pressure, simply turn the purge valve. Among it's many uses are testing vacuum related systems in the engine including the ignition system, carburetors, automatic transmissions, computer systems, fuel system, air conditioning units, cruise control units, and emissions control system. One person can quickly and easily bleed the hydraulic lines without the mess. Gauges are available separately, or look for our listings with Pumps including Gauges!