Scaled to fit 4/4 size violin with a playing length of 13 inches (328mm), this electric violin C string will fit the majority of standard sized electric violins. -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. Available on special order.