![Spirocore 4/4 double bass string solo tuning B Spirocore 4/4 double bass string solo tuning B](https://www.bertboonviolins.com/550-large_default/spirocore-4-4-double-bass-string-solo-tuning-b.jpg)
Steel string for solo tuning. 4/4 size (vibrating string legnth 110cm)
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Steel string for solo tuning. 4/4 size (vibrating string legnth 110cm)