If best violin players need the best instruments, and best instruments deserve the best strings, best violin players deserve Opal Titan Violin E Referenz string. This string allows violin players with high artistic and technical skills to exploit their instrument’s full capacity. Opal Titan Violin E Referenz is composed with the ideal synthesis of metals in their perfect proportion. Smooth as silk, strong as Titanium, Opal Titan Violin E Referenz offers you something new: Perfection in violin strings.