Martin MA535S Marquis Phosphor Bronze Custom-Light Authentic Silked Acoustic Guitar Strings - Martin Guitar knows a thing or two about pampering valuable instruments. If you’re looking for some extra protection your fine guitar, Authentic Acoustic Silked strings are the right choice you. adding soft silk wrap to ball ends of prevent wear and tear on bridge plate as you play. The puts comforting layer in place every time change strings. Available 80/20 Bronze 92/8 Phosphor Bronze.Gauges: 11-15-23-32-42-52Thread wrapped protectionEngineered resist corrosionExcellent tuning stability accessories, Strings, Guitar Strings, Acoustic Guitar Strings, 6 String Sets for Acoustic Guitar