Pirastro Oliv Violin set: 

The sheep gut core of the Oliv strings is manufactured, wound and polished in the traditional way, by hand. The sound is brilliant, rich, and complex. Oliv strings offer the typical beautiful sound of gut strings.

Set Includes:

• Oliv Violin E - gold-plated/steel: Medium, Ball, envelope
• Oliv Violin A - alum/gut: Ball (13 1/2), straight
• Oliv Violin D - gold-alum/gut: Gut Knot (16 3/4), straight
• Oliv Violin G - gold-silver/gut: Gut Knot (15 3/4), straight