1、Function: This oxygen sensor rethread chaser tool is designed to re tap oxygen sensor threads, straighten damaged threads and prevent future cross threads.2、Advantage: The oxygen sensor thread repair tool makes re tapping the oxygen sensor installation a breeze, eliminating cross threaded holes and keeping your vehicle running smoothly.3、Application: M12x25 can be used with 3/8in hex socket. M18x5 can be used with 3/4in hex socket or 3/8in square screwdriver, also works with M18x5 spark plug threads.4、High Quality Material: Made of premium metal material, oxygen sensor rethread chaser tool has high hardness, wearproof and durable in use.5、Long Service Life: Exquisite and careful workmanship, O2 sensor thread repair tool can be used for a long time, saving your cost, do not need to change frequently.