Elixir Nanoweb 12106 7-String Medium, Nanoweb strings set for 7-string guitar, Nanoweb coating provides a smooth feel and protects against common corrosion and debris buildup for extended tone life, Anti-Rust Plating ensures longer tone life for the entire set, gauges: 011 - 014 - 018 - 028 - 038 - 049 - 059.