Astro 7859 Universal Cooling System Pressure Tester Easy testing of cooling systems up to 24psi (1.65 bar) Color coded pressure gauge allows safe, easy and accurate testing of cooling system Quick coupler allows quick and easy connection of pump and test adapters Unit is suitable for domestic and import vehicles Set includes: (1) Hand pump with gauge, hose, quick coupler and pressure release valve, (1) Universal radiator adapter with inlet diameter range of 16mm-25mm, (1) Universal auxiliary radiator tank adapter and 3 rubber seals with inlet diameter range of 34mm- 45mm, (1) Open End Wrench and (1) Fixed handle socket wrench