Made from high-quality rubber for long life, this spark plug tester delivers reliable performance across a wide temperature range and maintains stable function in extreme conditions. Benefits at a glance - Quick problem identification: Detect ignition issues fast to speed repairs and enable precise spark maintenance and diagnosis. - Clear troubleshooting: Intelligent LED signals and color indicators convey different spark states for easy interpretation. - Time-saving use: Simple plug-in operation requires no tools or special experience, helping you save time and effort. Key attributes - Material: High-quality rubber for durability and long service life - Function: Visual spark condition testing with LED indicators - Performance: Reliable operation across broad temperature ranges - Ease of use: Plug in and start the engine without tools or complex steps Use scenarios - Diagnose misfires during cold starts or under load to pinpoint faulty plugs or ignition components - After replacing ignition parts, quickly verify spark quality across cylinders - Routine maintenance for small engines or motorcycles to ensure consistent spark performance and smooth operation