TH-IR-100 Thomastik Infeld Infeld Red violin string set 4/4 red TH-IR-01 Thomastik Infeld Infeld Red violin string E-1 4/4 red TH-IR-02 Thomastik Infeld Infeld Red violin string A-2 4/4 TH-IR-03 Thomastik Infeld Infeld Red violin string D-3 4/4 red TH-IR-04 Thomastik Infeld Infeld Red violin string G-4 4/4 red