7PCS O2 Oxygen Sensor & Oil Pressure Socket Set, 1/2″ 3/8″ Drive x 22mm (7/8″) 27mm 29mm Oxygen Socket Wrench, O2 Sensor Remover Removal Tool. Wide Application: This O2 sensor remover set is suitable for most cars, you can use it to disassemble, replace and clean the car oxygen sensor.