Easily Clean Oxygen Sensor Hole ThreadsThe ARES Oxygen Sensor Rethread Tool allows you re-tap oxygen sensor threads easily to straighten damaged threads and prevent future cross threading. This versatile rethread tool can be used with a 3/8-inch hex socket or 3/8-inch square drive ratchet and makes it easy to keep your vehicle running smoothly.  Features: Includes: 1 pc. Oxygen sensor rethread toolWorks with M18 x 1.5mm spark plug threadsFor use with 3/8-inch hex socket or 3/8-inch square drive ratchetCleans oxygen sensor hole threadsDesigned to straighten damaged threadsPrevents cross threadingUse Anti-Seize while using this product