The outside bolt is off, but the inside one isnt. When I spin the inside bolt, the nipple on the outside spins with it thus not loosening...
Heres a few pictures..
This is the bolt on the inside which wont loosen.

And here is the 'nipple' that just spins at the same pace as the inner nut..

How can I get the nipple to not spin and let me loosen the inner bolt???
Tom