Test gasoline fuel pump pressure on most domestic and imported fuel injection equipped vehicles. Easy to hook up and read. Kit contains everything to test all GM vehicles with multi-port and some throttle body injection (TBI). Test all Chrysler cars with multi-port turbos and some TBI. Use on most Ford TBI systems equipped with or without small Schrader test valve. Test all Ford vehicles with multi-port fuel injection systems. Includes two gages for more accurate testing: Large Gage: Calibrated from 0-100 PSI (0-7.0 BAR) Small Gage: Calibrated from 0-50 PSI (0-3.5 BAR) Large gage can be used for all appplications and has hang-up hook. Small gage provides more detail when pressure will not exceed 50 PSI (0-3.5 BAR). Full instructions included.