By far, the best harmonica neck rack that we've found - ANYWHERE! Instead of wing nuts, the K & M rack has "minature door knobs" that you can really grip to quickly and securely set the rack into position. Rubber covered around the neck for comfort. K & M's exclusive rubber covered harmonica grip plates not only hold the harmonica tightly in place, but the rubber also protects the instrument from getting scratched. Another big advantage to this rack's design is the fact that it fits ALL harmonicas - diatonics and chromatics - the rare exceptions being the big orchestral models and some specialty models like the Hohner Echophone. A quality piece of equipment made in Germany.