I have a set of Husky allen wrench sockets. They are
available at Home Depot.
As for the 14mm I have a HAZET Tool, it has a 14mm allen
and a 13mm drain plug 6pt box end on the other side.
Ordered from the Mercedes Dealer it is p/n 117 589 02 07 00
Also have the allmost identical tool with a 17mm drain plug,
6pt box end and it is p/n 000 589 24 07 00
The 14mm end is for transmissions and differentals. This
end of both wrenches have a slight curve for tranny clearances.
Hopes this helps some of you out there.............