Remove that hard-to-reach O2 sensor with this 7/8" / 22mm oxygen sensor socket. Simply attach a ratchet or breaker bar to the 1/2" square drive opening, feed the sensor wires through the built-in slot and break that sucker loose. The innovative design adds 2-1/2" of reach to your drive tool It's constructed of impact-rated chromoly steel so it'll stand up to high torque loads. Dependable Powerbuilt sockets meet or exceed ANSI standards and have a lifetime warranty, all at affordable prices. 1/2 in. Dr. 7/8 in. 22mm Oxygen O2 Sensor Socket