JOHN PEARSE STRINGS 1450H - FOR 12-STRING ACOUSTIC GUITAR - PHOSPHOR BRONZE WOUND - HEAVY GAUGE 13-56 - C#-TUNING John Pearse Strings designed for professionals. JPS is a small USA string company known well in musician circles for their passionate work. Great strings - Great Sound! Strings are plain steel and round wound Phosphor Bronze (92% Copper and 8% Tin). A phosphor bronze typical balanced, bright, warm and articulated tone with a bit more of mids than 80/20 bronze. A little bit more corrosion resistant. FEATURES: - Set: 1x John Pearse 800 for Acoustic Guitar - Hex Core - Roundwound - Material: Phosphor Bronze - Gauge: Heavy (013/013 / 017/017 / 014/030 / 018/039 / 027/045 / 035/056) John Pearse Strings - Designed for passionate musicians