Features: 100% brand new and high quality Quickly diagnose all ignition systems. Spark testers can be connected between spark plugs and spark plug lines to solve ignition connection problems. Connect the tool between the spark plug and the plug line to the combustometer's plug line as "purple blue and 2 cm straight line", or the ignition coil is poor in color is red or curved. Switch handle to adjust the jump distance. The spark tester connects between the spark plug and spark plug wire in seconds to troubleshoot dirty spark plug connections, defective points and bad cables or connections. Package Includes: 1x Spark Plugs Tester Specifications: Material: ABS+Metal Pen Length: Approx.14cm/5.51in Line Length: Approx.69cm/27.17in Alligator Clip Length: Approx.4.7cm/1.85in note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.