PMD Products 7pc Automotive Oxygen O2 Sensor and Sending Unit Socket Set Tool Auto Truck Car Features extended and reinforced body removes the most stubborn sensors without rounding them off Automotive sensor socket set for installing and removing oxygen sensors, injectors and thermal switc 1 inch , 1-1/6 inch, 1-3/16 inch Oil Pressure Sending Unit Socket, 1-1/16 inch GM Thermal Switch Socket 7/8 inch Short low Profile O2 Oxygen Sensor Socket, 7/8 inch Universal Oxygen Sensor Socket 7/8" inchUniversal Vacuum Switch PVS, TVS Socket Tool