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.