Martin SP Light Strings
Martin acoustic guitar strings. Light gauge phosphor bronze .012 to .054
SP (Studio/Performance) series strings are made by Martin Strings craftspeople from an ultra-high quality steel core that resists breaking much better than average strings.
Both the core and the plain strings are plated with a smooth acoustic bronze finish. They stay bright, have long lasting tonal qualities, and look absolutely beautiful on a guitar.
E 1st Bronzed Steel: .012
A 2nd Bronzed Steel: .016
G 3rd Phosphor Bronze Wound: .025
D 4th Phosphor Bronze Wound: .032
A 5th Phosphor Bronze Wound: .042
E 6th Phosphor Bronze Wound: .054