double bass string set 4/4-3/4, medium, consists of CO-371-M, CO-372-M, CO-373-M and CO-374-M
double bass string G-1 4/4-3/4,medium, steel, nickel
double bass string E-4 4/4-3/4,medium, steel, tungsten
double bass string E-4 4/4-3/4,medium, steel, tungsten (extra long
double bass string C-5 4/4-3/4, heavy, rope core, tungsten