Dual Plug Car Kit Spark Plug Tester 12V Gasoline Ignition Plug Diagnostic Tool

12v car diagnostic dual ignition kit spark tester tool

3 In 1 Stainless Steel Guitar Fretboard Guard Protector Fret Luthier Repair Tool. Simple to use just remove rubber boot from spark plug, insert tester & place tester boot on plug. Must-have diagnostic tool for any engine with a spark plug.