I found it at a bargain bin at my local bike store. It snaps into place and the supports attach onto my rear bike frame. The best way to describe it is it looks like an "A" coming off of the back of my bike. It is basically a gusset based design. I will try to snap a picture of it, but I can never figure out how to load it onto this forum.
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A government big enough to give you everything you want,
is strong enough to take everything you have.
Thomas Jefferson