Includes Free Extra 1st String!Nickel on Steel Having recently celebrated 50 years of producing the worlds finest music strings, Rotosound proudly offer nickel on steel electrics in a wide range of gauges for 6, 7, 8 and 12 string sets to suit all playing styles and the needs of todays musician. The highly secret core to cover ratios used in their making offers such brilliant sustain and tonal nuances few others can equal. The longer European eye adds extra strength at the ballend. The unsurpassed quality and constant care to detail throughout every stage of the production process culminates in a string equally geared to the professional and non-professional alike. All Rotosound music strings are manufactured in England.9, 11, 16, 24w, 32w, 42w.