Martin SP 80/20 Bronze strings are made with our highest quality bronzed steel core wire and bronze wrap wire.

If you can gig night after night, your strings should be able to keep up.
Martin SP strings are designed with the performer in mind. Made with high tensile strength core wire and finished with our highest quality wrap wire, our 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. Available in 80/20 Bronze and 92/8 Phosphor Bronze.