Spark Plug Tester - This automotive diagnostic tool allows you to verify the presence of ignition and thus identify a fault (e.g., a faulty spark plug). Thanks to the spark plug tester, a visual inspection is possible.Easy to Use - Connect between the spark plug and the ignition wire. The design allows you to quickly see if the ignition is working. Without having to remove the spark plug, you can see if there is ignition.High-Quality Material - Made of nickel-plated material, equipped with pure copper wire inside, and subjected to a high-voltage current test. Everything is designed for a long service life.High Efficiency - This ignition tester saves considerable time when checking the efficiency of an ignition system without having to remove the spark plug. It's a useful tool for anyone who does DIY projects or manages a fleet of equipment.Wide Range of Applications - Essential for quick and revealing checks of automotive ignition status issues, such as cars, trucks, motorcycles, lawnmowers, chainsaws, trimmers, snow blowers, generators, etc.Spark Plug TesterEssential for troubleshooting all internal combustion engines.To clearly visualize the operation of the ignition system.Effective for detecting faulty ignition leads and easily analyzing any starting problems.Usage StepsStep 1: Stop the engine and remove the rubber boot from the spark plug.Step 2: Connect the black connector of the tester to the spark plug.Step 3: Connect the metal end of the tester to the spark plug coil.Step 4: Start the engine.Step 5: Indicator lights flash when the circuit is working Specification:Material: SiliconeColor: Black and clearPackage includes:1 x Spark Plug Tester