Designed to rapidly and effectively measure the amount of fuel each injector returns to the deposit tank on diesel vehicles up to 6-cylinder fitted with common rail injection system Capable of quickly identifying worn, blocked or inoperative injectors Easy to read graduated reservoir bottles allows quick comparison of the returned fuel volume between cylinders 25 ml graduated bottle with a mark every 3.125 ml Kit includes 3 sets of 18 brass adapters for Bosch, Siemens and Denso injectors, 1 set of 6 plastic adapters for Delphi injectors, 6 graduated reservoir bottles, 6 fuel-resistant transparent flexible hoses 800mm long