Super Compression Tester Tests compression on all major model vehicle platforms, domestic & foreign with gasoline engines,including mini engines . Quick coupler connection on gauge assembly for fast &easy changing of hose &adapter assemblies . 2-1/2”gauge has dual scale dial with ranges from 0-300 psi and 0-21 BAR . Easy push-button deflator for fast service . Rubber gauge boot for added protection . Includes: . 24” hose assembly with quick coupler . M14 hose adapter with short thread . M14 hose adapter with long thread . M12 x M16 hose adapter . M10 adapter with short thread . M14 adapter extension . Small engine tester . Instructions &labeling that clearly identifies each product . Molded storage case 5639