[Quickly Diagnose Misfire Issues]: Use the ABN 2 Pack Spark Plug Spark Testers to diagnose engine ignition issues and defects; Troubleshoot spark plug connections, contact points, and bad cables
[Service Your Vehicle]: From motorcycles and lawnmowers to cars, trucks, and boat motors, this small engine spark plug tester tool works for internal and external combustion engines that use spark plugs
[Easy to Use]: Connect the coil checker tool between spark plug and plug wire then start engine; If sparks are sent, the line spark tester will mirror spark by lighting; Bright white light indicates healthy spark, while jumping and dim color indicates weak coil or plug
[Keeps You Safe]: 11.3-inch (28.8cm) long spark plug tester engine ignition coil tester tool indicates inconsistencies and sparks in a way that keeps you safe from electric currents
[Quality You Can Trust]: Each small engine spark tester automotive spark tester tool features a 3-inch (7.6cm) nickel-plated shaft and a 7-inch (17.8cm) rubber straight boot and cable that ensure durability and long-lasting use; Package includes 2 testers