Thank you, AWAP...I'm looking to replace the short stock hose on my Eclipse with a longer hose--I've found the DR hoses fine--for use with an Air2 (this issue was discussed in another thread)--I only use this arrangement when diving locally with my pony, off of which I have a redundant 2nd stage (so off the primary tank I have my primary 2nd stage and the Air2). But when I travel--and don't use a pony--I would like to be able to switch back to the short stock Halcyon hose and power inflator (I then reinstall a backup 2nd stage to my 1st stage). It seems to me the easiest way to switch hoses on the Halcyon would be to have each hose attached to an elbow joint, which can be screwed on and off the female threaded piece that protrudes from the bladder. I don't know where to get a Halcyon elbow (and my LDS has stated to me that they hate to order anything from Halcyon), and DR Express is fast and easy, so I was hoping to be able to use the DR. Any other suggestions would be welcomed...thanks again, mahjong