Oxygen Sensor Remover is ideal for removing, inspecting, replacing and installing heated and non heated oxygen sensors and vacuum switches on most vehicles with computercontrolled engines 3 different types of sockets cover various situations of oxygen sensor locations,2 chasers are for cleaning and repairing damaged threads 6 point with low profile and slotted design to enable you remove oxygen sensors with the wiring harness still attached Special side cutout design allows easy access to oxygen sensor from any section and prevents damage to wires Package includes 3 socket oxygen sensor socket 12 Drive x 78 22mm x 50mm long; 1pc Vacuum Switch Socket 38 Drive x 78 22mm x30mm long; 1pc Vacuum Switch Socket 38 Drive x 78 22mm x 6pt x 80mm long; 2 Thread Chasers 1pc M12 x 1.25mm;1pc M18 x 1.5mm