S & G Tool Aid Fuel Injection Pressure Tester #TE-33950. New old stock, never used. Test all GM vehicles with multiparty and some TBI. Test all Chrysler cars with multi-port turbos and some TBI. Use on Ford TBI systems equipped with or without small Schrader Test valve. Test all Ford vehicles with multi-port fuel injection systems. Includes two gouges for more accurate testing. Large gage can be used for all applications and has hang-up hook. Small gadgets provides more detail when pressure will not exceed 50 P.S.I. See pictures for tool application and to determine condition for yourself.