Combining the time-honored construction of a Slinky string with a proprietary iron and cobalt wrap that sizably increases the harmonic range, the Ernie Ball 2720 Slinky Cobalt Electric Guitar Strings are a revolution in what a set of strings can do.

• Sizes - .011 .014 .018P .028 .038 .048
• Iron and cobalt plated steel wire wrapping for greater magnetic fidelity with pickups
• Made in southern California with environmentally friendly packing