AUTOOL SPT301 Digital Spark Plug Tester - 3 Holes 110V Ignition Coil Detector W/ 0.31" Height Adjust Socket, 200-9000 RPM for All Cars Trucks Vehicles

AUTOOL SPT301 spark plug tester is a professional automotive repair tool designed to help you testing the performance and strength of spark plugs. It simulates actual engine conditions and frequency can reach 200-9000rpm and is compatible with all crankshaft engine and motorcycle spark plugs on the market. SPT301 spark plug tester can also compare 3pcs holes at the same time simulate the real speed, which improves the work efficiency of maintenance personnel. You can observe the spark plug's jumping condition through the intuitive transparent protective cover, so as to determine whether the spark plug is working normally or needs to be replaced, which is an indispensable and practical tool for automotive repair work.