With Slinky Cobalt strings, gain access to a modern, powerful sound that accurately reproduces every detail of your playing. Cutting-edge technology to enhance your tone. With its Slinky Cobalt strings, Ernie Ball has once again revolutionized the world of guitar! Cobalt's main attraction lies in its magnetic induction, which is far superior to that of iron- or nickel-based alloys. The result? An unprecedented level of output, even better-defined midrange, richer harmonics and better reproduction of midrange impact.
it 
