Double Spark Plug Tester With Two 12 Mm Spark Plug Sockets household Then if you leave home

Then if you leave home

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Double Spark Plug Tester With Two 12 Mm Spark Plug Sockets household Then if you leave homeFEATURES Double hole tester: Equipped with two spark plug sockets, this tester allows you to test two spark plugs simultaneously (good and bad). By comparing the spark intensities, you can accurately assess the performance and ignition intensity of each spark plug. Protective cover: Designed with a protective cover to prevent the risk of electric shock during the test and ensure safe operation. Adjustable working frequency: The rotary switch allows