Fender Nickel Plated Banjo Strings, Light Fender nickel plated steel banjo and electric mandolin strings are designed for optimum performance on any banjo and mandolin. They combine the high output of steel with the smooth feel of nickel. Fender phosphor bronze mandolin strings deliver rich, warm tones, with excellent highs and long life. Fender mandolin and banjo strings are made in the USA from the highest quality materials using state of the art manufacturing techniques. These processes, along with our strict quality controls, mean you get great strings every time you open a pack.