About this item

1. Quick Spark Detection: Easily tests spark plug ignition performance, instantly indicates whether spark is present for efficient engine diagnostics. 2. Adjustable Gap Design: Features adjustable electrode gap to simulate different ignition conditions, allows comprehensive testing of spark plug health. 3. Universal Compatibility: Suitable for most gasoline engines, including cars, motorcycles, lawn mowers, chainsaws and small engine equipment. 4. Simple & Safe Operation: Easy to use with clear visual indicator, safely detects spark without direct contact with high voltage components. 5. 4-Pack Value Set: Includes 4 ignition testers in one pack, perfect for professional mechanics, workshop use and sharing with DIY enthusiasts.