GHS Strings 345 Silk And Steel, Silver-Plated Copper Acoustic Guitar Strings, Light (10-42)GHS Strings 345 Silk And Steel, Silver Plated Copper Acoustic Guitar Strings, Light (10 42)Model: 345Featuring NitroPack singles, guaranteed to be fresh from the factory! Silver platted Copper on a Round Silk & Steel CoreClassical guitar tone and feel from an acoustic string. Light Gauge: 010 013 020 026 034 042