D'Addario J1012 4/4M Prelude Cello Single D String, 4/4 Scale, Medium Tension Arrangers but adding Helix Control gives

but adding Helix Control gives you the same innovative capabilities found in the floor based Helix

Constructed from wood and cowhide

M-Play includes one DMX port for direct control of any compatible DMX device

Synthetic cord provides a great deal of flexibility allowing the beads to move freely

D'Addario J1012 4/4M Prelude Cello Single D String, 4/4 Scale, Medium Tension Arrangers but adding Helix Control givesPrelude strings are the educator's preferred choice for student strings due to their unique blend of warm tone, durability, and value. Prelude strings have the warmest sound available in an affordable, solid steel core string design. Unaffected by temperature and humidity changes, they have excellent bow response. Available for violin, viola, cello, and double bass Best selling steel core string Engineered for unparalleled longevity and durability