After many years of supplying the finest luthiers of ukuleles in Hawaii, we've developed the optimum string for the most discerning player and professional alike. The Uke-Pro Series by La Bella Strings will allow you to finally play up the fretboard in tune, taking solos you may have been anxious to attempt. We take great pleasure in presenting these strings for your playing pleasure. Made with high quality rectified nylon to ensure perfect intonation String Gauges: .022, .032, .036, .025 Packaged using MAP Technology (Modified Atmosphere Packaging) to prevent tarnishing and ensure freshness