They can be attached somehow ...

What Hama has only thought with this type of attachment?
The hand strap is pulled up again by the standard-loops of the camera and down through the loop in the mounting plate of Hama Quick Shoot Strap.
Both belts then pass through a single plastic loop (four times, once there and back). Accordingly fiddly is adapting to one's own wrist. But well, that does not do that so often.
The attachment itself holds and can slip the padding does not, and I'm not sure if I would not prefer that.
On the positive side, the battery door and the SD card slot on the D5100 from Nikon continues to be reached without any problems.
Unfortunately for me outweigh the negative aspects:
I did not manage to adjust the hand strap so that's really convenient to carry it and support the camera:
Is she firmly, you have to get in, "pfriemeln" and the wrist is bent at least in my camera.
If it is too loose you constantly feel that slips the loop just above the back of the hand and there are bruises of the upper air cushions.

I have now removed again and will use the QuickShootStrap without this wrist strap.