Check the listing for details. Thomastik-Infeld VI05 Vision Violin C String - 4/4 Size Silver-wound. Condition: New. Listed at 50.71 USD. A Synthetic-core String with a Modern Sound If you demand rock-solid intonation and steadfast reliability, you'll be blown away by Thomastik-Infeld's Vision violin strings. This string boasts an advanced synthetic core, enabling it to settle in quickly and to achieve stable tuning in no time flat. Vision strings yield you a decidedly modern sound, with a focused, clear, open tone that teems with ear-grabbing brilliance. The string players here at Sweetwater appreciate the climate-agnostic performance of this string. From the humid tropics to the frozen-solid arctic, this string will deliver in equal measure. Thomastik-Infeld has been producing high-end orchestral and fretted instrument strings for 100 years, and Vision violin strings showcase their experience in a practical way.