7-Piece Sensor Socket Set Includes: 4673-1 - 29 mm Vacuum Switch and O2 Socket, 1/2" Drive, 4673-2 - 7/8" Vacuum Switch and O2 Socket (wide slot), 3/8" Drive, 4673-3 - 27 mm Thermal Sensor Switch, 1/2" Drive, 4673-4 - 7/8" Vacuum Switch and O2 Socket (narrow slot), 3/8" Drive, 4673-5 - 1-1/16" & 1" Oil Pressure Sending Unit Socket, 3/8" Drive, 4673-6 - 7/8" O2 Sensor Socket, offset 1/2" Drive, and 4673-7 - 7/8" O2 Sensor Socket (low profile), offset 3/8" Drive. Also includes blow molded case to keep set contents contained and organized when not in use.