These premium uncoated mandolin strings by D'Addario deliver superior break resistance and top-notch sound quality. Featuring an innovative combination of nickel-plated phosphor bronze wrapped onto a high carbon NY steel core, D'Addario Nickel Bronze strings bring out the unique tonal characteristics of any mandolin, allowing its natural voice to truly shine. Nickel Bronze delivers unrivaled clarity, resonance and projection, as well as outstanding balance and harmonically rich overtones.