This flow meter kit is designed to measure the return flow of Bosch diesel injectors. This tool is also designed to measure the return flow of high pressure diesel injectors. This kit allows simultaneous measurement of the pressure of all 6 injectors. The flow meter kit is designed to measure the amount of fuel that every injector returns to the post tank rapidly and effectively. This way you will be able to know whether any injector is damaged. Suitable for use BOSCH, SIEMENS, DENSO and DELPHI common rail injection systems. There is a anodized hanging bottle rack for engine bay. A moulded case is included for transportation and storage.