D'Addario EZ890 85/15 Bronze 09-45 Super Light Acoustic Guitar Strings 85/15 Bronze combines the brilliance of 80/20 bronze with the longer life characteristics of Phosphor Bronze. The 85/15 Bronze wrap wire is precision wound onto a carefully drawn, hexagonally shaped high carbon steel core, resulting in long lasting, bright sounding tone with excellent intonation. String Gauges: Plain Steel .009, .012, .015, Bronze Wound .025, .035, .045 Made in the USA