• [Quickly Diagnose Misfire Issues]: Use the ABN Spark Plug Spark Tester 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, in 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

WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.