Check the listing for details. Tool Aid 23900 Hands Free In-Line Ignition Spark Tester. Condition: New. Listed at 13.43 USD. Tool Aid 23900 Hands Free In-Line Ignition Spark Tester The Tool Aid 23900 Hands Free In-Line Ignition Spark Tester is a convenient and efficient tool for quickly diagnosing ignition system issues. This hands-free device connects in-line between the spark plug and spark plug wire, providing a visible duplicate of the ignition spark. By observing the frequency and intensity of the flash, technicians can easily identify potential problems in the ignition system or fuel delivery system, saving time and effort during automotive repairs. Features: Use to quickly troubleshoot ignition system. Device is "hands free" and connects in-line between spark plug and spark plug wire. Shows a duplicate view of the ignition spark and checks the condition of ignition system at each cylinder. Frequency and intensity of flash indicates whether there is an ignition system problem or a fault in the fuel delivery system. Specifications: Ignition System Spark Checker Type: Spark Checker, In-Line, Hand-Free Use On: Quickly Troubleshoot Ignition System Order Part Number: SG23900 Item Description: Hands Free in-Line Ignition Spark Tester Manufacturer: Tool Aid Country of Origin: CN Harmonization Code: 90318086 Default Selling Unit: EA