Spark Plug Tester Dual Adjustable Hole Automotive Ignition Analyzer 500-9000RMP
Spark Plug Tester 12V Dual Hole Automotive Ignition Tester Tool. Product Introduction: This product is a professional 12V ignition test tool. It simulates engine speeds from 500 to 9000 RPM, allowing simultaneous testing of 2 spark plugs to compare performance and quickly identify worn or faulty plugs.