SP02 Spark Plug Tester Automotive Engine Ignition Coil Tester Dual Holes 0 to 6000RPM Adjustable Working Frequency Car Spark Plug Gap Tool. 【Fits 99% of Gasoline Engines – One Tool, Endless Options】From cars to motorcycles, lawnmowers to boats—this spark plug tester works on nearly any 12V gasoline engine.
