Half Round bass strings are wound with pure nickel, then precision ground, leaving the outer surface semi-smooth. They retain the flexibility and most of the tonal characteristics of round wound strings. Try them for their flatwound feel and a vintage roundwound tone. ENR71-5 45, 65, 80, 100, 130. Scale Lengths Short Scale String; 32" Ball End to Start of Silk Medium Scale String; 34" Ball End to Start of Silk Long Scale String; 38" Ball End to Start of Silk