Monel (aka Nickel Bronze) has built in natural resistance to tarnish and corrosion yet it feels great to the touch and has it's own unique tonal color. This set has a Round Core and gauges are 10-13-17-26-36-46.
Monel strings were used on Gibson guitar up until 1972-ish. These strings have a bit of a pure nickel kinda vibe. Great for taming a bright guitar.