THRO-100 Thomastik Infeld Rondo violin string set 4/4 THRO-01 Thomastik Infeld Rondo violin string E-1 4/4 THRO-02 Thomastik Infeld Rondo violin string A-2 4/4 THRO-03A Thomastik Infeld Rondo violin string D-3 4/4 THRO-04 Thomastik Infeld Rondo violin string G-4 4/4 THRO-02A Thomastik Infeld Rondo violin string A-2 4/4