D'Addario NS Electric Violin Single Low C String, 4/4 Scale, Medium Tension 4/4 size violin - playing length of 13 Inches (328mm) Medium tension Stranded steel core provides optimum playability and produces a clear, warm tone Designed for use on electric instruments but also suitable for acoustic All D'Addario strings are designed, engineered and manufactured in the USA to the most stringent quality controls in the industry