The nuts                            

To remove the nuts on the drive shafts you need a strong 35 mm or
1 3/8 " socket wrench. (Maybe you have to grind it down a little bit on the outside to make it fit.)
The car must be on it's wheels when you loosen/tighten the nuts. The hand brake must be on.

Tighten:                            
37,5 mdaN (375 Nm)