Martin SP Strings are ideal live, in the studio, or wherever maximum string life is desired!
Martin SP Studio/Performance Series strings are made from an ultra-high quality steel core that resists breaking much better than average strings. Both the core wires and the plain strings are plated with a smooth, Acoustic Bronze finish. These strings stay bright, have long-lasting tonal qualities and look absolutely beautiful on a guitar.
80/20 Bronze wound, Gauges 10-47, 12-strings.