Vent Cable question

[Jamiez]

I searched around and couldn't find this answered any place else.  I'm sure the answer is simple and obvious but rather than take a chance and screw something up I decided to ask here first:
I am trying to replace one of the vent cables on my non-AC 74.  It all looks pretty simple but there is a cap on the end of the arm I am not sure how to remove.
I circled it in the attached image.

[femtnmax]

If I remember right I used pliers from above, squeezed gently so not to crush the cap, and rotated.  The cap came off fairly easily.

[Cuda Cody]

Just use pliers and rip it off.  They are kinda a one time use item.  My local hardware store has them in all the automotive sizes and just replace it with a new one.  Maybe a 40 cent item at best.

[Chryco Psycho]

if you are gentile with htem you can reuse them just rotate them back with fingers or pliers