D'Addario H412 SM Viola Strings

Helicore Viola D String — Short Scale, Medium Tension

The D'Addario Helicore Viola Single D String in Short Scale, Medium Tension is a standalone replacement D designed for violas measuring 15" and under. It belongs to the Helicore orchestral family, which is built around a stranded steel core rather than a traditional solid gut or synthetic core, giving the line its characteristic quick bow response and short settling time. The D string itself is titanium wound, a winding choice that keeps the string's overall diameter small while still producing a clear, warm tone with focused projection. Because it is sold as a single string rather than a set, this D is intended for players who need to swap out a worn or broken D without replacing the rest of their working set.

Technical Specifications

• String: D (single replacement string for viola)
• Core: Stranded steel core
• Winding: Titanium wound
• Tension: Medium
• Scale: Short scale — fits 15" violas and under
• Ending: Ball end for standard viola tailpiece fitting
• Origin: Designed, engineered and manufactured in the USA
• Packaging: Sealed pouch for corrosion protection

Who It's For

The Helicore Viola Single D String, Short Scale, Medium Tension is the right choice for viola players with a 15" or smaller instrument who need a single D replacement that matches the rest of a Helicore set. The stranded steel core and titanium winding deliver a focused, clear tone with quick bow response, which suits players moving between classical, jazz, folk and other styles where fast articulation matters. Medium tension offers a balanced feel under the bow for advancing students, adult amateurs and working players who want a versatile D that pairs naturally with the rest of the Helicore viola line. The ball end fits standard viola tailpieces, so installation is straightforward for anyone comfortable with a routine string change.