- Dual-Hole Simultaneous Testing : This ignition coil tester efficiently tests two spark plugs at the same time, allowing for quick comparison and diagnosis of ignition issues across multiple cylinders. Ideal for mechanics needing to speed up their testing processes. - Adjustable Working Frequency : With a frequency range adjustable up to 6000 RPM, this spark plug tester is compatible with various engine types and conditions, ensuring precise testing on different vehicles. Perfect for shops that handle a diverse range of cars. - Safety Features : The spark plug and coil tester is equipped with a robust protective cover that safeguards users from potential sparks and debris during testing. This design enhances safety and reliability, making it suitable for both professional and DIY mechanics. - Durable Construction : Made from high-quality plastic and metal components, this tester is designed for longevity and can withstand rigorous use in professional automotive environments, ensuring that it remains a reliable tool in your diagnostic arsenal. - Practical Applications : - Quickly identify faulty spark plugs when diagnosing poor engine performance in cars or motorcycles. - Test ignition coils efficiently during routine maintenance checks to ensure optimal engine functionality. - Ideal for both professional mechanics and home repairs, providing valuable assistance when troubleshooting ignition problems. This ignition coil tester is a must-have for anyone looking to enhance their diagnostic capabilities with speed, precision, and safety.