^^^ that link is to a hose storage tube. Not what Audio1der is looking for.
I would suggest something like this so you can see when the tank is empty. This is the bayonet type. If your hose has this type of ends then this will work to connect 2 hoses.
http://www.campingworld.com/shopping...net-lugs/22172
The original post was about storage tubes and the above link pertains to that. I am going to try to line the rear bumper with some material to limit rubbing damage. maybe something as simple as gorilla tape on bottom and sides. That way the rust will be a non factor.