I've often been disappointed with Obitsu 60 optional hands. Not only is the quality nowhere near as good as Dollfie Dream hands, the selection is also extremely limited. Trying to use DD hands on an Obitsu wrist frame will result in the hand falling off. DD wrist frames also don't fit onto Obitsu 60 arm parts. These problems will disappear today with some modifications.
This is the default Obitsu 60 wrist frame.
There's nothing special about it.