 Martin Msp3600 12-String Sp Phosphor Bronze Extra Light Acoustic Guitar StringsGauges 10-14-23-30-39-47.Martin SP Acoustic strings are designed with the performer in mind. Made with high-tensile strength core wire and finished with the highest-quality wrap wire, Martin’s SP line of strings stands up to rigorous practice and performance schedules to deliver consistent true tone that you can count on song after song.Bronze alloy for brilliance and long lifeGreat priceStudio-quality performance Accessories, Strings, Guitar Strings, Acoustic Guitar Strings, 12 String Sets for Acoustic Guitar Martin 41MSP3600 Martin, 12 String Sets for Acoustic Guitar |