ABN Inline Spark Plug Tester &ndash; Straight Boot Ignition Test Light for Small Engine Car, Motorcycle, Lawn Mower, Chainsaw Practical: The ABN Inline Spark Plug Tester  Straight Boot Ignition Test Light for Small Engine Car, Motorcycle, Lawn Mower, Chainsaw quickly and easily diagnoses ignition/engine issues; Checks the fire (spark) on spark plugs, even in hard-to-reach places Versatile: Works with all vehicles that have a spark plug, even small engine tools; Car, motorcycle, lawn mower, boat motor, chain saw, and more Easy to Use: Connect the tester between the spark plug and the plug wire, and if a spark is being sent, the tester will mirror the spark and light up Light Indicator: Shows the color of the spark very clearly so you can identify a weak pack Specifications: Provides a safe secure way to identify spark; Offers a straight boot; Simple, accurate, visible at any angle, and takes out the guess work