This D'Addario Helicore Violin Single D String is made of durable titanium and is suitable for adjustable tuning. It is a perfect fit for 4/4 scale violins and is designed to provide medium tension. The string is made in the United States and is ideal for use by professional violinists. The Helicore technology ensures that the string lasts for a long time and has a beautiful sound. It is a great choice for anyone looking for a high-quality violin string.

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