D'addario XTB50105 Medium

String strengths: .050-.105 Strength: Medium tension Scale: Long Scale Material (winding): Nickel-plated steel Round wound Microscopically thin, moisture-repellent coating on all 4 strings does not affect tone or playing feel Made of HIGH CARBON NEW YORK STEEL, and in combination with FUSION TWIST for fixing the ball ends, the strings provide maximum tensile strength and tuning stability Made in USA