The Vevor fuel injector cleaner tester is designed to clean and test fuel injectors for a variety of vehicles. It uses ultrasonic technology to remove stubborn carbon deposits and helps restore injector performance for better combustion, stronger acceleration, and smoother driving. The unit supports EFI, FSI, and GDI injectors with selectable 12V, 70V, and 120V operating voltages. It can test up to 6 injectors at once and offers 9 test functions for evaluating spray angle, dripping, clogging, atomization, and uniformity. A built-in drawer and multiple connectors add convenience for storage and broader injector compatibility.