Berryman offers two versions of its B-12 CHEMTOOL THRU-RAIL INJECTOR CLEANER. Part #1126 is a pourable product that requires a canister setup that is pressurized with shop air. Part #1120 is a pressurized container that is finished with a 1/2"-16 RH acme thread. Both products are for use only with gasoline engines and will clean all types of fuel injectors, including PFI and GDI, as well as combustion chambers.