Use airplane hang wire to display sign holders in places where a flat surface is unavailable. Stretch the hangwire between two uprights or mounting locations and create a secure loop on each end. Use crimps hold the loops at the wire ends tightly, and the swager (crimping tool) to closes the crimps. Rigid fold-over sign sleeves hang nicely on the wire for full 11" x 8 1/2" or half-sheet 8 1/2" x 5 1/2" signs. Larger paper signs hang nicely with the various sign mounting clips with grippers to hold the signs and hang on the wire. Works perfectly in the produce department.