3/8" DR 22 mm Offset Flare Nut Oxygen Sensor Socket Wrench Vacuum Switch 

✦ High quality and durable for professional or DIY use.
✦ 7/8"( 22 mm) six-point socket with cutaway for wire clearance.
✦ This oxygen sensor wrench is for use with a 3/8" drive ratchet or breaker bar.
✦ Suitable for both heated and unheated oxygen sensors.
✦ The offset design helps you reach oxygen sensors in
　tough-to-reach spots compared to standard wrenches.