1Wide Compatibility: Radiator pressure tester kit is suitable for almost all types of vehicles, professional design is convenient for users to carry out a wide range of inspection and maintenance work. 2Powerful Function: Kit includes a tapered rubber adapter. The adapter can replace the radiator cap to seal the cooling system, and connect with the quick coupler on coolant refiller to help to fill antifreeze. 3Operating Principle: Pneumatic vacuum coolant filler first sucks and forms a vacuum on the cooling system by using shop air, then draws coolant into the cooling system. 4Durable Construction: Plastic covered premium brass manifold body, durable and high strength, not easy to damage and deformation, long service life. 5Easy Using: Efficient operation design ensures that the replacement process is fast and simple, so that users do not spend too much time and energy.