Roosebeck Lyre Harp String Set (10) Tuning and String Gauges:; - - 1:F5 .010 0.25 - Steel; 2:E5 .010 0.25 - Steel; 3:D5 .011 0.28 - Steel; 4:C5 .012 0.30 - Stee; 5:B4 .014 0.36 - Steel; 6:A4 .015 0.38 - Steel; 7:G#4 .015 0.38 - Steel; 8:F4 .023w 0.58 - Nickel; 9:E4 .024w 0.61 - Nickel; 10:D4 .028w 0.71 - Nickel