D'Addario H512 1/2M D 1/2 Cello Strings

Helicore Cello D String — Clear, Warm Tone with Fast Bow Response

The D'Addario Helicore Cello Single D String is a 1/2 scale, medium tension replacement string built around a multi-stranded steel core that blends strength with flexibility. Designed to fit 1/2 size cellos with a playing length of 600 mm, this D string produces a clear, warm tone while delivering the quick bow response that has made the Helicore line a favorite among students, teachers, and performing cellists alike. The smaller string diameter allows the string to speak immediately under the bow, giving players a responsive feel that works well across classical repertoire, fiddle styles, and alternative genres. Premium quality materials and skilled workmanship combine to produce a string known for excellent pitch stability and longevity once broken in.

Technical Specifications

• String Designation: D — single replacement string
• Instrument Fit: 1/2 size cello with a 600 mm playing length
• Tension: Medium — optimized for the majority of players
• Core: Stranded steel — multi-wire cable construction for flexibility and quick response
• Ending: Ball end for standard cello tailpiece fitting
• Tonal Character: Focused tone with warm sound profile
• Bow Response: Fast — quick settling time under the bow
• Country of Manufacture: USA

Who This String Is For

The Helicore Cello D String in 1/2 scale is the right choice for student cellists, advancing players, and working musicians who need a responsive, stable replacement D string for their fractional-size instrument. Its stranded steel core and medium tension make it well suited to classroom practice, ensemble playing, and stage performance alike, while the quick bow response helps younger players develop clean articulation. The string's flexibility and focused tone work across a wide variety of playing styles, from classical études to fiddle-influenced repertoire. Because the Helicore line is designed, engineered, and manufactured in the USA to stringent quality controls, players can expect consistent performance string after string.