Gibson Phosphor Bronze Acoustic Guitar Strings are crafted to deliver rich tone, clarity, and a smooth playing feel for discerning acoustic players. Made with a durable steel hex core wrapped in phosphor bronze, these strings produce a balanced tone with shimmering highs and a warm low end. Developed and approved by Gibson’s master luthiers, they’re designed to enhance the natural resonance of your 12-string acoustic while ensuring lasting performance and comfort.