Seller notes

Product Description Dual Plug Car Spark Plug Tester 12V Gasoline Ignition Plug Diagnostic Tool 1pc Features:Must-have diagnostic tool for any engine with a spark plug.Simple to use just remove rubber boot from spark plug, insert tester & place tester boot on plug.Turn the engine over if ignition is being sent to the cylinder, light in tester glows.Great time and frustration saver with cars, motorcycles, boats, chainsaws, lawn mowers & more.The spark plug base hole of 12MM, is wider to be compati...

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