GHS Strings 900 Precision Flats, Stainless Steel Flat Wound Electric Guitar Strings, Light (.012-.050) Model: 900 Featuring NitroPack singles, guaranteed to be fresh from the factory! Flat Wrap Stainless Steel on a Hex Core Highly magnetic stainless steel for high volume, polished to a smooth finish. Light Gauge: 012-016-024-030-040-050