Petz fine tuner violin 4/4 - 3/4… Petz fine tuner violin 4/4 - 3/4, black with gold colored screw Item No. 30114VN Petz fine tuner violin 4/4 - 3/4… Petz fine tuner violin 4/4 - 3/4, black with gold colored screw × Petz fine tuner violin 4/4 - 3/4, black with gold colored screw