Removes fluids from confined areas where engine oil drain plug is inaccessible. Ideal for oil changes on boats, cars, motorcycles, outdoor power equipment or industrial machinery. Also handy to remove bilge water from boats. Complete with air inlet control valve, negative pressure quick exhaust valve and fluid draining pressure balancer. High capacity accommodates larger 4-stroke engines. Check valve for easy release of displaced air in container. Extra long 48" hoses with fittings included for almost any extraction application. See-thru container for quick visual reference. Suitable for engine oil, gear lube, brake fluid, coolant, water etc. 1/4" air inlet; 40-170psi working range.