Feature:1. The spark plug tester can provide quick diagnostic support for all ignition system testing problems.2. Easy to use, just connect the tool between the spark plug and the ignition wire.3. The normal spark of the ignition coil is like "purple blue and 2cm straight line". The color will turn red or curved when it gets worse.4. Transparent viewing window design, convenient to observe the jump situation and confirm whether it is normal and easy to use.5. Comes with grounded clip for firm fixing and a rust-proof rubber sleeve for easy use.6. Use alloy material to connect the high pressure port, firm and durable.Specification:Item Type: Spark Plug TesterMaterial: ABSFitment: UniversalPackage List:1 x Spark Plug Tester