Synthetic/Hydronalium/Stainless Steel wound.
Warchal Brilliant strings offer a brilliant, rich tone and wide dynamic range. They offer concert-hall projection across all four strings.

Features:

• Advanced synthetic core string. 
• Brilliant, rich tone and wide dynamic range. 
• Full projection across all four strings. 
• Quick tuning stability. 
• Suitable for intermediate and advancing students.
• They are lower tension than steel strings so have the benefit of also working very well on more fragile cellos.