• 1/2" Drive Oxygen Sensor Socket 7/8" (22mm)• Ideal for oxygen sensors in exhaust manifolds of 1981 and later model cars and trucks.• 7/8 inch - 22mm 8 point socket with offset drive hole• Designed for use with a 1/2" square drive tool• Compact, low clearance head • Black oxide coating to resist corrosion• 50mm long• Caution: Not intended for use on power tools