Medium scale: for instruments 15"-16"
Long scale: for instruments over 16"
XLM: for instruments over 17"
SM: for instruments under 15"

D'Addario Helicore - Viola Set vas-5$65.85

Multi-Strand twisted steel core strings are superb for the advanced and professional players. The small string diameter provides quick bow response. Through special manufacturing techniques, the Helicore strings have a warm, clear sound with excellent pitch stability and longevity.