Features: Connect the tool between the spark plug and the plug wire, Quickly diagnose problems with all-ignition systems. Use this ignition spark tester to check the-condition of the ignition system at each cylinder without going to expensive mechanic. The spark tester connects between the spark plug and spark plug wire in seconds to troubleshoot dirty spark plug connections, defective points and bad cable or connections. Connects in seconds. Ignition coil with sparking-plug connector, you can directly use to replace or repair the previous old or broken one.Replacing part numbers for reference: 022905100A 022905100D 022905100G 022905100K 022905100N 022905715C 1331283 UF404, perfectly matching. Brings better ignition performance. Made of premium-plastic material, wear‑resistance, durable and-sturdy to use. Specifications: Material:Plastic+Metal Size: Approx.20x8.5x8.5cm/7.87x7.87x3.34inch For 022905100A 022905100D 022905100G 022905100K 022905100N 022905715C 1331283 UF404 Package Includes: 1pcs/6pcs x Ignition Coil 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. Thanks for your understandings.