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Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings  

Sku #H79095000000000

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Ernie Ball

Play like a pro with these revamped classics.

Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings are a new spin on Ernie Ball's best selling set of strings which have been played by the likes of Eric Clapton, John Mayer, Steve Vai and many more. The Cobalt Series is clearly an improvement on its classic nickel-wound counterpart giving the player increased sustain, clarity and output. In addition, they resist sweat and moisture better and have unmatched flexibility when compared to other nickel wound strings. Cobalt is the most magnetically active string alloy on the planet and attracts the magnets in your pickups more than any other string.

"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.

All Ernie Ball strings are precision manufactured to the highest standards and the most exacting specs to assure consistency, optimum performance and long life. Made in the USA.

Gauges 10-13-17-26-36-46.

Start hearing and feeling the Cobalt difference today. Order now!

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by PowerReviews
Ernie Ball2721 Cobalt Regular Slinky Electric Guitar Strings

(based on 1 review)

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Reviewed by 1 customer

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The best String available.


from Sao Paulo, Brasil

About Me Experienced

Verified Buyer


  • Consistent
  • Good Tone
  • Long Life
  • Strong


    Best Uses

    • Backup
    • Concerts
    • Practicing

    Comments about Ernie Ball 2721 Cobalt Regular Slinky Electric Guitar Strings:

    The best string available by far.
    I've never had the sensation i had playing this new product from Ernie Ball.
    I Always have been a great fan of their products, but in terms of long life strings, i had some preference for other brands.
    They have made a great/serious work here. The String is not only a "Long life" thing, go beyond. For sure we are talking here of a next step thing that not happens that often.
    The tone is great, the feeling when playing is superb, and they last tooooo long.
    I strongly recommend any one to give a try.

    Service and delivery comments:

    The product arrived in time, great customer service, as always.

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