1Flex Head: Swiveled head helps create extra leverage in narrow areas. The 22mm wrench helps getting additional clearance during the job. Effortlessly turns the removal job into a breeze. 2Application: O2 sensor remover is designed to work on 7/8in(22mm) O2 sensors. Replacement for Ford contours, 4.6L, 5.4L modular engines. Covers most vehicles on the market. 3Easy to Use: Oxygen sensor removal tool works around the exhaust and gets to places ordinary wrenches won't. Easy to remove or install the hard to reach and stuck O2 sensors. 4Access Difficult Spots: Slim design with flex head offers extra clearance for removal and installation of oxygen sensors positioned upward and inward of floorboard. 5Damage Proof: Get to the O2 sensor from the side to prevent damaging the wire or the sensor. Keeping the wire harness attached by getting to the sensor from the side instead of from the top.