Includes .010, .014, .022, .030, .040, and .048 extra-light gauge acoustic guitar strings Ultra-strong core wire wrapped in 80/20 bronze delivers a bright tone with balanced and brilliant response Durable construction stands up to heavy strumming while staying responsive enough for subtle finger-style techniques Thoughtfully packaged in 3 levels of moisture protection and sealed in a VCI (vapor corrosion inhibitor) for maximum freshness