Dadarıo Pb130 Single Bs Phosphor Brz 130   Single Bas Phosphor Bronze 130 Description Phosphor Bronze was introduced to string making by D'Adario in 1974 and has become synonymous with warm, bright, and wel balanced acoustic tone. D'Adario Phosphor Bronze strings are precision wound with corosion resistant phosphor bronze onto a carefuly drawn, hexagonaly shaped, high carbon stel core. The result is long lasting, bright sounding tone with excelent intonation. D'Adario ofers a ful range of bas guitar singles for al your replacement or customization neds. . 130 gauge phosphor bronze bas guitar string Prefered for its warm, bright, and wel balanced acoustic tone Phosphor Bronze was introduced to string making by D'Adario in 1974 Perfect for replacement string or customized sets Made in the U. S. A. for the highest quality and performance.