DESIGN: Our socket's slotted design allows you to remove oxygen sensors with the wiring harness still attached, and the socket is offset and compact which allows extra leverage even in hard to reach spots | QUALITY:This socket made from premium Chrome Molybdenum steel, the socket allows users to exert maximum torque while the precision casting ensures accurate fit and function. This tool meets and exceeds ANSI/ASME standards. Apeixoto offers a full line of Oxygen Sensor tools including our complete AP1822F Oxygen Sensor Socket set that features thread chasers, oxygen sensor sockets and more! | FUNCTION: Even if you don't have a lot of experience working with cars, you can replace your O2 sensor with this tool to help with your car's emissions and gas mileage. The sensors live in the harshest of environments and may require some elbow grease to remove, but this quality tool can save your knuckles and save you time! | FEATURES:Removes and installs oxygen sensors on vehicles with computer-controlled engines,Common 6 point, 7/8 in. (22mm) socket fits most oxygen sensors,Use with any 3/8 inch drive ratchet or breaker bar,Offset drive with wire gate accesses sensor from the side, not the top, preventing damage to wires | LIFETIME WARRANTY - This socket comes with a lifetime warranty. If the part ever fails simply contact us for a replacement for FREE.