SET INCLUDES Vacuum Coolant Refill Tool The automotive vacuum type coolant tool adopts an integrated structure and superior material, containing an easytoread vacuum gauge range 300 inHg 760cmHg, plastichousing brass manifold body, and 18inch rubber hose, all stand up to heavy use. By filling coolant in a vacuum to eliminate bubbles, engine warping can be avoided by using this vacuum coolant refill tool. The quickrelease coupler easily locksunlocks the radiator adapter for easy operation Air Compressor Needed Pneumatic coolant replacement work needs a compressed air tool an air compressor, but not offered to pull a vacuum in the cooling system, then sucks the new coolant into the entire system and eliminates air pockets. Please remember to drain out the waste coolant inside the system first, and add moderate fresh coolant between the ideal pressure range of 2520 inHg. Normal vehicles complete the coolant change process in 1015 minutes Pressure Hose Coolant Hoses Cooling system filler kit comes with a fixed pressure hose18inch and 2 transparent coolant hoses24inch 60inch. Blue anticorrosion hose has a timesaving quickrelease coupler for adapter connection. Coolant bleed hose can be installed on the tool to help prevent coolant splashing, and coolant delivery hose with brass quick plug and fine filter screen for quick lock and impurity catching. The transparent color makes it easy to observe the coolant flow Extensive Usage The universal tapered radiator adapter is made of rubber and aluminum, gives this airdriven coolant vacuum refill tool a wide application to radiator filler necks on a great many common domestic and foreign cars, motorcycles, trucks, SUVs, airlifts, etc. In addition to the builtin American air plug, considerate vacuum coolant fill kit also prepares a standby 14 European air plug for easy optional air source connection and less inconvenience Aftersale Company Sincerely welcome to ADAFIRST store. Thank you for your trust and choice of the ADAFIRST. We are committed to providing customers with satisfied product and quality service, customer satisfaction is our pursuit. To avoid delaying your work at hand, please check the completeness and functional performance of your purchase as soon as you receive it. If there is any doubt or question, just come to us and we are all at your service. Promise Reply within 24 hours