Tests compression on all major model vehicle platforms, domestic and foreign with gasoline engines, including mini engines. Quick coupler connection on gauge assembly for fast and easy changing of hose and 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 and labeling that clearly identifies each product. Molded storage case.