With the proper fittings, you can make one yourself with basic tools. If you don't feel comfortable doing that, Aircraft Specialty / Flighlines will custom make hoses for you. My understanding is that if you're grounded, they can move you to the front of the queue to get you a hose quickly so you're back in the air and can get back home.
Tom monitors this forum pretty regularly, and they do excellent work. Have only heard positive things about them.