Includes .011, .015, .022, .032, .042, and .052 medium-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