Car Dual Hole Spark Plug Tester Ignition Test Analyzer Diagnostic Detector Kit

1x ST100 Car Spark Plug Tester(Not Included Spark Plug). The test height of the tester is equal to 36mm; most spark plug specifications are 36mm. (Note: The test height of the tester is 36mm, which refers to the height at which the spark plug is inserted ).

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