D'Addario EJ70 Phosphor Bronze Mandolin Strings, Ball End,  Medium/Light, 11-38 For use on all mandolins requiring ball end, rather than loop end strings Light-medium gauge Corrosion resistant packaging for strings that are always fresh Made in the U.S.A. for the highest quality and performance String gauges: Plain Steel .011/.011, .015,.015, Phosphor Bronze Wound .024/.024, .038/.038