This project is an engine ignition tester made with scientific design and excellent craftsmanship. It has simple application methods and practical functions, which can effectively help you prevent safety hazards, and clearly and intuitively help you understand the fire coil or high-voltage wire status. This is a professional and practical ignition system testing tool, which will meet your needs very well. Features - Color: Black. - Material: ABS, acrylic, aluminum alloy. - Size: About 14.00X2.50X2.50cm/5.50X0.98X0.98inch. - Power supply voltage: 12 (V). - Working temperature: -20-50 ( degree centigrade). - Preferred materials, , safe, durable and practical. - Easy to rotate, you can adjust the spacing according to actual needs, which is more practical. - It is made with scientific principles, easy to use, and provides you with a clearer and more intuitive detection method. - The product has fine workmanship, high accuracy, and a wide range of applications, allowing you to know the status of the coil in real time. - and , you can buy this professional and practical engine ignition tester . Package list: 1 x Spark Plug Tester 1 x 55cm Detection Line