This spark plug tester pen is crafted to meet the needs of users seeking a reliable diagnostic tool for automotive engines. It helps identify ignition coil and spark plug issues, ensuring smooth engine performance. Its portable design and straightforward operation make it a valuable addition to any toolkit, enhancing vehicle maintenance efficiency. Features -Color:Black -Material:Plastic -Size:11.80X2.50X2.50cm/4.64X0.98X0.98in -Quick spark plug analysis: diagnose spark plug conditions in seconds to ensure engine stability and improve overall vehicle performance -Reliable fault detection: advanced technology delivers precise results, helping car owners avoid unnecessary maintenance -Portable and practical: compact design makes it easy to carry and use, allowing car owners to perform spark anytime, anywhere -Broad compatibility: designed to work with various vehicle types, including family cars, suvs, and light commercial vehicles, ensuring wide applicability - display: features a easy to use interface for clear and accurate readings, enabling efficient spark plug testing for all users Package list: 2 x Spark Plug Tester