Fuel hose swivel info request

Hi all. I am mounting a 1 gallon tank on the spare tire carrier on the RV's rear door and need a swivel for the hose. It needs to be "dynamic", that is, it will swivel when it is in use, not just to make a connection that would stay in one position. The swivel will be below and in line with the door hinge. I think I found one online but it looks like it is only hose at one end and fixed thread at the other. https://www.ebay.com/itm/Black-AN4-A....c100008.m2219
I need one with hoses at each end. Any help would be greatly appreciated.