TH-58 Thomastik Infeld Präzision violin string set 4/4 TH-50 Thomastik Infeld Präzision violin string E-1 4/4 TH-51 Thomastik Infeld Präzision violin string A-2 4/4 TH-53 Thomastik Infeld Präzision violin string D-3 4/4 TH-54 Thomastik Infeld Präzision violin string G-4 4/4