Discover the Ernie Ball COBALT electric guitar strings, a game-changer for guitarists!
• Unique Textured Grip: The cobalt strings have a textured, matte surface that provides an excellent grip under your fingers, making them a favorite among many players.
• Superior Magnetic Response: As a transition metal, cobalt offers a greater magnetic response than nickel, resulting in higher output and a more focused upper midrange.
• Versatile Tone: Whether you're playing clean with a sparkling top-end or adding drive for a full, raw sound, these strings are perfect for riffing.
'Ernie Ball Cobalt Strings sound and feel better than anything I've ever played! You have to check these out!' - Slash
'Cobalt Strings feel incredibly silky under my fingers and deliver more punch, output, and clarity than normal strings!' - John Petrucci
'There's a certain degree of clarity and punch you get from Cobalt Strings that I haven't heard tonally from any other strings I've played.' - Joe Bonamassa
What Ernie Ball says:
Ernie Ball Cobalt Slinky Guitar Strings are round-wound for maximum clarity and serious punch. They offer increased sustain, clarity, and output, resist sweat and moisture better, and have unmatched flexibility compared to other nickel wound strings.
Proprietary Alloy developed by EB specifically for Guitar Strings
Engineered to Maximize Output and Clarity
Slinkier Feel, Beefier Tone
Longer Lasting due to a Stronger Wrap Wire
World's First and Only Cobalt String
Alloy of Iron and Cobalt – Most Magnetic Alloy Available!
Patent Pending
Wound Strings Only

These Ernie Ball Cobalt Power Slinky 7-String 11-58 Electric Guitar Strings are great for both live performances and studio recordings. They're perfect for guitarists who want a unique feel and a versatile tone. Whether you're a rock, metal, or blues player, these strings will meet your needs. They're 7-string with a gauge of 11-58, providing a great balance between playability and tone.