You know, I never gave it a thought when I bought it...I figured that the box fit, so the plane must fit too...lol This plane has the biggest wingspan that I've ever owned so I guess that's why I really didn't give it a thought. And as for the wing joiner, it's 3 pieces, two ply and one aluminum for a total of 5/16"x7/8"x12" long. The wing attaches with to studs on the leading edge that slides in the fuse and two hold down bolts on the trailing edge. Seams pretty much standard. As for the struts, I really don't think they are meant to be too functional...I guess not as much as I would be asking of them in a two piece design.