D'Addario J55 5-String Banjo Strings, Phosphor Bronze, Medium, 10-23 Phosphor Bronze wound 4th string for added warmth Loopend construction for universal fit Preferred for its warm, bright, and well balanced tone Made in the U.S.A. for the highest quality and performance String Gauges: Plain Steel .010, .013, .016, Phosphor Bronze Wound .023, Plain Steel .010