Oh well, its 3/16 or 1/4 in just see which size wrench fits on it, or take a piece down to your autoparts store and they will match it up. They sell it by 1,2,3,4,5 and 25 foot sections and have just about every fitting you would need to make them fit if you needed.
This is my jeep. There are many like it but this one is mine. My jeep is my best friend. It is my life. I must master it as I must master my life. Without me, my jeep is useless. Without my jeep I am useless. I must drive my jeep true. I must be better than the mud, who is trying to defeat me. I must conquer it before it conquers me. Before God I swear this creed: my jeep and myself are masters of the mud, we are the saviors of my life. So be it, until there is no more mud. Amen.