- Coated:Treated with Cleartone Proprietary Technology
- Gauges:.013, .017, .026, .035, .045, .056
- Core Material:Steel
- Winding Material:Phosphor Bronze
- Winding Type:Round Wound
Martin MSP7200 SP Lifespan Treated Acoustic Guitar Strings These new Martin SP Lifespan Phosphor Bronze Coated Acoustic Guitar Strings are treated to preserve the SP tone and feel for the life of the string.