High Energy Ignition Spark Plug Tester Wire Coil Adjustable Circuit Diagnostic

Specification:Condition: NewMaterial: Alloy + Plastic Color: As Pictures Shown Total Length: Approx. 12 cm / 4.7 inch Pen Head Length: Approx. 4 cm / 1.6 inch Cable Length: Approx. 50 cm / 19.7 inch Package Weight: Approx. Perfect diagnostic too: According to spark color and flash over distance to determine the quality of the coil. Great Value: You can quickly and easily diagnose whether your car power system is working properly. Perfect Selection: Provides a secure, reliable way to diagnose faults, convenient, cost-effective, and time-saving. Easy To Read: Groud the clip to the engine. Read the length on the spark through the little window. The longer the spark gap the stronger the coil.