Descrition:Help to remove and install oxygen sensors, oil pressure sending units.The vacuum switches equipped with wires or vacuum tubes.Portable safe storage carry case,hand held, convenient to carry.Wide range of applications and universal for most oxygen sensors on most cars.Easy to use and to operate at affordable prices.Durable for long time using and so practical.Package included:1 x 1/2» Drive X 27mm (12 Point) Oil Pressure Sending Unit Socket1 x 1/2» Drive X 29mm (6 Point) Pressure/Vacuum Switch Socket With Slot1 x 1/2» Drive X 7/8»Or 22mm (6 Point) Long Oxygen Sensor Wrench Socket With Slot1 x 3/8» Drive X 7/8» Or 22mm (6 Point) Vacuum Switch Socket With Slot1 x 3/8» Drive X7/8».