7 pc. Sensor & Sending Unit Socket Set Set Includes: 1 & 1-1/16 Oil Pressure Sending Unit Socket Includes a 1 and 1-1/16 hex which allows the removal of oil pressure sending units. Special deep design fits switches up to 2-5/8. Designed to be used with a 3/8 drive tool or 1-1/8 wrench. 1-3/16 Oil Pressure Sending Unit SocketAllows the removal of oil pressure sending units on late 1980 and mid 1990 GM vehicles. Designed to be used with 1/2 drive tool. 1-1/16 GM Thermal Sensor Switch SocketAllows the removal and installation of thermal sensor switch on 1973 - 1977 GM vehicles. Designed to be used with 1/2 drive tool. 7/8 Heated Oxygen Sensor SocketSocket designed with slot in socket which accommodates the connectors on heat oxygen sensors. Socket has a double 1/2 drive for easy access. 7801 Yes - GASOLINE ENGINE EXHAUST (CONDENSATES/EXTRACTS)