I just purchase a JAE 21 from Zipp Kits and it look nothing like this one does. Is this a special design then the ones Zipps have, I like this one better, it look like it is design alot better. One thing I notices is that you don't have to goe thru the radio box to get to the nuts for thr strud and rudder.And the side of the tube have materenal remove to make it a litter tube. So I kind of feel like I got rip by Zipp. If you have anything you like to let me know about on the two difference type of tubes they contact me by email([email protected])