EJ57, D'Addario's heaviest 5-string banjo set, delivers maximum volume and resistance for heavy picking. Loopend construction for universal fit. D'Addario's heaviest gauge of 5-string banjo strings, delivers increased resistance and projection Loopend construction for universal fit Nickelplated steel for bright tone, smooth feel and long life Made in the U.S.A. for the highest quality and performance String Gauges: Plain Steel .011, .012, .013, Nickel Wound .022, Plain Steel .011 Environmentally friendly, corrosion resistant packaging for strings that are always fresh