These Strings are actually 24 karat gold plated for longer lasting, tarnish free playing. Maxima strings were originally made in Germany in small quantities to satisfy the most discriminating players and major artists worldwide.  As a result, they have always in short supply and hard to find. Gauges for this set are .009,.011,.016, .025, .032, .042 

Visit our Ebay Store for availability of various other gauges and sets for electric guitar, bass and acoustic guitar.