It's weird every other question on here seems to be addressed in one series of threads "stuck" to the top of the forum. Someone should come up with a catchy name for them... stuccos? stick-em ups?
Wait I got it!
STICKIES! -> http://www.pbnation.com/showthread.php?t=1003598&page=2
No specifics on the inside diameter but it's a lot larger than the Autococker hose.