This Tester is available in 110V (in the US) or 220V power supply (used outside the US.)Fuel injection passages can become clogged, restricting fuel delivery or flooding engines. SBT's PWC & Jet Boat Fuel Injector Tester/Cleaner allows you to test, clean and rebuild injectors. Advanced computer control for ease of use and accuracy Easy to read LCD Robust circuitry to allow a wide variety of injectors to be tested and cleanedFits most common Fuel injectors with straight configuration, Does not fit DI injectors with angled configuration Integrated ultrasonic cleaner Ability to test up to 6 injectors at once Automated Idle, medium and high speed testing Injector leakage testing Idle, medium and high speed spray pattern testing Comes with the same unmatched tech support SBT is known for