USAG/Facom Replacement 1/2" Male Drive for use with K.230B adapter (K.230B1) - the K.230B is a 3/4" Drive to 1/2" drive reducer. It is rated at a max of 512nm. Should you ever break the male drive through excessive torque, this is the replacement part needed.
I now stock the USAG version of this item. Identical to Facom but with quicker delivery times on volume orders.