Black Diamond Black Coated Acoustic Guitar Strings 13-56
 
The technology behind Black Diamonds 92 percent Copper and 8 percent Zinc black coated strings allows for a smoother feeling string with added protection for our 92/8 wire against acidic content from your fingers eating away at the wrap wire. Longer lasting, less unwanted overtones. Plus the string set looks cool on your guitar!
 
String gauges: .013 - .017 - .026 - .035 - .046 - .056