1、Main Usage: As an adapter for DIY cleaning the fuel injector nozzle, removed the injector from the engine, it can be cleaned separately. When the injector is clogged, you can use it to save expensive nozzles. 2、Wide Applications: This DIY injector cleaner adaptor kit is easily to clean most of car motorcycle fuel injectors.Universal fit for any 12-24V car, motorcycle, electric car, ATV, boat and so on. 3、Working Principle: The electrical port of the injector connect the 12V power by this cable. When the current is switched on, the solenoid valve in the nozzle is opened. Meanwhile cleaning liquid flush through blue tube by liquid pressure in cleaner bottles, then through injector to clean it. 4、Working Requirements: It needs the combination of 12V DC power supply and aerosol of injector or carburetor cleaner ( not included ). Please prepare these necessary tools. 5、Package Covers: The package consists of four blue tubes and one pair of alligator clip charging cables. Features: Main Usage: As an adapter for DIY cleaning the fuel injector nozzle, removed the injector from the engine, it can be cleaned separately. When the injector is clogged, you can use it to save expensive nozzles. Wide Applications: This DIY injector cleaner adaptor kit is easily to clean most of car motorcycle fuel injectors.Universal fit for any 12-24V car, motorcycle, electric car, ATV, boat and so on. Working Principle: The electrical port of the injector connect the 12V power by this cable. When the current is switched on, the solenoid valve in the nozzle is opened. Meanwhile cleaning liquid flush through blue tube by liquid pressure in cleaner bottles, then through injector to clean it. Working Requirements: It needs the combination of 12V DC power supply and aerosol of injector or carburetor cleaner ( not included ). Please prepare these necessary tools. Package Covers: The package consists of four blue tubes and one pair of alligator clip charging cables. Specifications: Item: Fuel Injector Nozzle Cleaner Main Material: ABS Color: Blue Alligator clip cable Length: about 1m Package Size: 16 * 15 * 5cm Package Weight: 200g Package List: 4 * Cleaner Adapter Tubes 1 * Set of Alligator Clip Charging Cables 4 * Cleaner Adapter Tubes 1 * Set of Alligator Clip Charging Cables