What is this (see image) for? I just got the bike, new to me, no manual.
My apologies for such a simple question I am sure...
Now if someone suggests that it a threaded insert that is welded in the frame and leaves it at that... well lets just say I got friends
Seriously, my lovely bride asked me what it was for, and sheepishly I had to tell her I did not know....
Thanks in advance.