I was thinking that as well.I'm trying to envision how it would use the strap ring. At least in the photo, the hook is 180 deg. away from where it would have to be to touch the ring. Also too large and oriented wrong to fit into it. There must be another bit that straps onto the horn in some way that isn't in the picture.
I ordered it through a dutch internet musicstore:Can you direct me to a website for the stand? I'm very interested.