GHS Silk and Bronze acoustic guitar strings feature a unique silk and steel core wound with phosphor bronze cover wire to create a warm, mellow tone with a soft feel. Silk and Bronze strings are ideal for live performance and have impressive sustain and low finger noise for the recording studio.Gauges: 11-14-23-29-39-49Factory FreshThe GHS strings you buy are as fresh as the day they were made. All GHS facilities are environmentally regulated to control temperatures and humidity. Sensitive raw materials and bulk products are further wrapped in protective bags for storage. Coiled strings are placed in string packets that, in independent laboratory tests, have proven to offer the optimum protection from humidity.