A3 Paper Carrying "Scroll Caps"

I was looking for a solution to carry A3-sized papers (that do not fit into my bag) without having to fold them, so I printed out these caps that can be used to hold a rolled A3 paper, protecting the edges from getting all wrinkled, as well as making the paper a rather strong tube of paper that can survive a trip in a bag.

Simple model, but if I can save someone ten minutes... :)