New generation Obligato string set with a composite fiber core has the following specifications/features:

• Brilliant and clear sound with a very fast response
• Big and powerful sound
• Insensitive to temperature and humidity changes
• The A string has a steel core wound with chrome steel
• The D string has a synthetic core wound with chrome steel
• The G and C strings have a synthetic core wound with tungsten steel

Click here for the datasheet of Pirastro Obligato cello strings.