The unwound strings are made from plain steel and the wound strings are phosphor bronze.
OCTAVE MANDOLIN STRINGS D'ADDARIO EJ80 PHOSPHOR BRONZE MEDIUM 12-46 - LOOP END
D'Addario EJ80 Medium 12-46 Phosphor Bronze Octave Mandolin Strings
ZENGXUE B-flat Phosphor Bronze Brass Cornet Instrument Beginner Performance Test Standard Trumpet Set (Color : Phosphor bronze)
Beginner Phosphor Bronze Trumpet Bb Tune Heavy Instrument Band Grade Examination Performance Professional Trumpet(Phosphor bronze)
D'Addario Mandolin Strings - Coated Mandolin Strings - XT Phosphor Bronze - For 8 String Mandolin - Extended Life, Natural Feel - Medium, 11-40 & EJ62 80/20 10-34 Bronze Light Mandolin String
Euphonium Sets Euphonium Brass Band B Flat White Bronze Phosphor Bronze Adult Professional
