I received this as a gift, but I'm not going to use it, so I'm selling it. It's new, unused, and unopened. [Product Description] A new series from Dominant, loved by violin users around the world. Dominant Pro is worthy of the name "Pro," with further refinement of the original Dominant strings. E string: Carbon steel/ Tin plated, ball-end or loop-end (DP-01) A string: Synthetic/Aluminum Mittel D string: Synthetic/Silver Mittel G string: Synthetic/Silver Mittel