Make your next string change faster, easier, and more reliable with the Martin Quick-Change String Kit. This convenient bundle includes a 3-pack of Martin Authentic Acoustic® SP® Phosphor Bronze Light strings and a Martin string winder designed in partnership with MusicNomad™. The SP strings feature tin-plated core wire and higher tensile strength for balanced tone, quick response, and dependable tuning stability, while the ergonomic winder uses precision bearings and a rubber-lined design for fast, smooth, scratch-free operation. 

• Includes 3 sets of SP Phosphor Bronze Light strings 
• String winder designed with MusicNomad 
• Balanced tone and dependable tuning stability 
• Fast, smooth, scratch-free winding operation