Hangs a dowel out and away from shelf to present occasionally - but regularly - used items that clutter workspace. Took all of about 20 minutes to design it, it took about 50 minutes to extrude each part - 3 parts were used to hold up a 4 foot dowel."Smaller Shelf" version is for a wire shelf that has a 3/4" wire rod gap versus the pictured shelf that has a wire gap of 1 1/4". Make sure to use the correct one.Both versions will accept normal wire spools up to 2" in radius.Uses wire shelf system(s) commonly found at Home Depot. Just snaps in place with a little force and the weight of the dowel assists in holding it there.Dowel is wood and 15mm in diameter. FAMULUS used a copper pipe, and this seemed to work well too.When extruding, I recommend utilizing a 100% fill, versus a sparse fill - this will make the part stronger.