DESIGNED SPECIFICALLY FOR USE ON ALL 4-STRING ACOUSTIC BASSES. PREFERRED FOR ITS WARM, BRIGHT, AND WELL BALANCED ACOUSTIC TONE. PREFERRED FOR ITS WARM, BRIGHT, AND WELL BALANCED ACOUSTIC TONE. ENVIRONMENTALLY FRIENDLY, CORROSION RESISTANT PACKAGING FOR STRINGS THAT ARE ALWAYS FRESH. MADE IN THE U.S.A. FOR THE HIGHEST QUALITY AND PERFORMANCE. STRING GAUGES: PHOSPHOR BRONZE WOUND .045 .065, .080, .100.