Check the listing for details. Thomastik-Infeld Rondo Violin D String - 4/4 Silver Wound. Condition: New. Listed at 44.25 USD. Pro-level Strings with Deep Tonal Intensity Thomastik-Infeld Rondo violin strings offer exceptionally deep tonal focus and intensity, along with an immediate bow response that ensures expressive playability at all dynamic levels. Whether you're playing a modern instrument or a priceless antique, these strings will enrich your playing with incredible depth, contoured brilliance, and a sweet character suggestive of a sought-after Italian violin. Moreover, the violinists here at Sweetwater are blown away by how these strings support all dynamic levels at various bowing speeds, bow pressures, and contact points. Simply put, Rondo violin strings give you confidence when you need to deliver maximum projection and volume, and you don't have to overexert yourself to get them.