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