Description: Designed for the removal and installation of oxygen sensors, oil pressure sending units and vacuum switches equipped with wires or vacuum tubes Sockets made with chrome vanadium 7pcs sensor and sending unit socket set Package included: 1 x 1/2″ Drive X 27mm (12 Point) 1 x 1/2″ Drive X 29mm (6 Point) 1 x 1/2″ Drive X 7/8″ Or 22mm (6 Point) 1 x 3/8″ Drive X 7/8″ Or 22mm (6 Point) 1 x 3/8″ Drive X7/8″ Or 22mm (6 Point) 1 x 3/8″ Drive X 1-1/16″ & 1″Or 27mm (6 Point) 1 x 3/8″ DR X 7/8″Or 22mm (6 Point) 1 X Carry Case .