1/4" F x 3/8" M Adapter

This small diameter extension will fit through the small yoke hole of the Oceanic FDXi.  It is 2-1/2" long and has 3/8"F x 1/4"M.  The Adapter which is included is 1/4"F x 3/8"M and allows the extension to be used will all of our 3/8" drive sockets.