Yeah, fits in the top section area of your pole, although, I suppose you could put it anywhere in the section of your pole.
When ordering, you choose what size o clips you require and they come in the packet with univalve.
Regarding the 3rd o clip you fasten on just out of the goosenecks. You crimp it just tight enough to grip and not crush the hose. Didn't need to use any extra things, just don't over do it