Oil Pressure Switch Socket 3/8" Drive or 1 1/8" hex Fits 1" and 1 1/16" Switches Up to 2 5/8" Long Oil Pressure Switches Oil Pressure Sending Socket Sliver. 【Size】Use with 3/8" drive or 1 1/8" hex. 【Application】A ABIGIAIL Oil Pressure Switch Socket Fits 1 1/16" Switches Up To 2 5/8" Long, Found on Newer GM and Chrysler Vehicles.