Spiral/Tungsten wound.
Thomastik Spirocore cello strings are constructed with a flexible, multiwire spiral rope cope. They offer a distinctive open tone and easy playability.

Features:

• Thomastik Spirocore strings are constructed with a flexible, multiwire spiral rope core.
• They are recommended for intermediate to professional players.
• Distinctive open tone and easy playability.
• Highly responsive across all strings.
• Available in three different material windings.
• Tungsten is the highest quality winding available.