The CornyKeg pin lock socket is a must have tool for anyone with a pin lock keg. The socket is a 13/16 six point hex, deep well socket, 3/8 drive. Notches have been machined on all six hex points to make seating around the pins a breeze. You will not find an easier tool to use than the CornyKeg pin lock socket. With this tool you will be able to keep you pin lock kegs properly maintained.