Feature●Spark plug wire coil diagnostic tool tester,test spark plugs,coils,and distributors on breaker point and electronic ignition systems.●Spark plug tester,blunt nose tip prevents lead puncturing.High intensity bulb and viewing window for greater flash concentrating.●Automotive spark plug wire tester, tests spark plugs,spark plug wires,and coils without puncturing the wire.●Pen high voltage cable tester,with the engine running,place the grooved end of the tool over the spark plug wire.The blub will flash to indicate spark.●Voltage tester tool, easy to carry and use, its suitable for home application, garage, laboratory.Description