Specification: 100% brand new condition Item Type: Ignition Test Pen Material: Alloy Color: as the picture shows Length: about 125mm / 4.9in Diameter: about 10mm / 0.4in How to use: When the engine starts, place the ribbed end of the instrument on the spark plug wire. If the bulb is flashing, the spark plug wire is transmitting the spark signal. This product can be used to test spark plugs, coils and distributors in two places, the electronic ignition system and the switch. The ribbed end makes the contact area between the cable and the instrument larger, and the high-brightness bulb makes the measurement results easy to observe.
Package list: 1 pc* Ignition Test Pen Note: Recommended for professional use.
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