Durable stable material - Constructed from high quality rubber, this spark plug tester delivers durable performance across a wide temperature range to provide consistent results. Improved efficiency - Helps streamline maintenance with accurate problem identification for faster, more reliable diagnostics. Efficient diagnosis with clear indicators - Identifies engine problems quickly using an intelligent light display, clear signals, and a color coded spark status for easy interpretation. Easy to use - Connect and start your engine smoothly with no complex tools or specialized skills required, saving time and effort for a convenient experience. Use scenarios and applications - Car maintenance and diagnostics: evaluate ignition system health on typical gasoline engines during routine service to confirm spark plug and ignition performance. - Motorcycle and small engine troubleshooting: quickly check spark plug function and ignition reliability on motorcycles, ATVs, lawn equipment, and other small engines. - Field service and repair: perform fast ignition system checks on generators, boats, and other engines in service calls or shop settings to identify issues efficiently.