This product is an engine ignition tester, made of premium materials. It has scientific design and practical functions. It can effectively detect whether the ignition coil or high-voltage wire is aging, cracked, , etc. It is made with craftsmanship, convenient, worry-free, efficient and practical, and will bring you a good experience. 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). - It is mainly suitable for detecting and judging ignition coils or high-voltage wires, effectively preventing potential safety hazards. - It is made of durable materials, efficient and practical, and can serve you well. - With scientific and reasonable design, you can state of the coil according to different spark colors, which is clear and intuitive. - The transparent observation window facilitates the observation of the situation and effectively prevents potential safety hazards. - This is a very practical engine ignition tester, which can bring you more convenience. Package list: 1 x Spark Plug Tester 1 x 55cm Detection Line