Thomastik Vision Titanium Solo Violin String SetVision Titanium Solo Strings are made with a technically advanced formula used to create a unique synthetic core with superior tuning stability. These durable, vibrant strings offer energetic and intense projection for soloists with a warm tone and focused harmonic content. Vision strings have excellent bow response and a short break in time. The VIT100 set includes: E string Stainless steel wire, titanium design with removable ball A string Aluminum