Ernie Ball 2721 Slinky Cobalt Regular Slinky 10-46
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What you need to know
What you need to know
- Modern and powerful sound with a high output level and richer harmonics
- More defined mids and sharper pick attack thanks to cobalt
- Responsive playing feel, ideal for precise and expressive playing
- Airtight packaging for fresh strings upon opening
Manufacturer Information
Ernie Ball
https://www.ernieball.com
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Safety manager:
Algam SAS
Email: contact@algam.net
Address:
More presence, more detail, more impact
Designed for electric guitar, this Ernie Ball Slinky Cobalt set leverages the naturally superior magnetic induction of cobalt to better "drive" your pickups. The result: a more immediate response, better nuance reproduction (picking, palm-muting, bends), and a midrange register that gains clarity. In the Regular 10-46 gauge, it offers an excellent balance between comfort, tuning stability, and versatility, from rock to metal to modern pop.
Technical specifications
| Tension | Medium | Draw | 10-13-17-26-36-46 |
| Type of cord attachment | Ball end | 1st cord pull | 10 |
| Category | electric | Nbr of strings | 6 |
| Classification | Regular | Material | cobalt |
| Number of strings | 6 | Gauge | 10-13-17-26-36-46 |
| Type | Cobalt Slinky Regular Slinky | Packaging | airtight pouch |
| Material / metal type | cobalt | ||
Customer reviews
What customers say
Summarized and selected by AI from recent customer reviews
Highly rated electric guitar strings praised for exceptional durability and sound quality. Customers said these are "the best strings" they've used, with "excellent resistance to oxidation" and "long durability." Ideal for rock/metal genres. Shoppers particularly appreciate the longevity even with acidic perspiration. Overall sentiment is overwhelmingly positive.
Review highlights
- “Simply the best strings I've ever used.”
- “Superb strings, nothing to complain about! The best!”
- “Reliable value! Highly recommended product!”
Based on 18 reviews
- 3 stars, 0 reviews
- 2 stars, 0 reviews
- 1 star, 0 reviews
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For those who know the unbearable acid perspiration that eats and teeth your strings, well this game makes me dream about 3 weeks on my guitar (duration 2 hours/use per 24 hours on average) over 3 weeks they are still of very good quality, almost not eaten, the oxidation is very slow compared to games d'addario or elixir and so on.
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For those who know the unbearable acid perspiration that eats and teeth your strings, well, well, this game makes me dream about 3 weeks on my guitar (duration 2 hours/use per 24 hours on average) over 3 weeks they are still of very good quality, almost not blown up, the oxidation is very slow compared to games d'addario or elixir and so on.
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I swear by this range anymore.
Excellent hold, great resistance to oxidation, and what about the sound!
Great for rock/metal.Automatically translated
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I swear by this range anymore.
Excellent hold, great resistance to oxidation, and what about the sound!
Great for rock/metalAutomatically translated
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I swear by this range: excellent hold, great resistance to oxidation, a very good sound!
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Questions frequently asked
What is the gauge of the Ernie Ball 2721 Slinky Cobalt Regular Slinky?
The set uses the 10-13-17-26-36-46 gauge, with the first string at .010 and the sixth at .046.
Are the Cobalt 10-46 strings suitable for an electric guitar?
This set is designed for electric guitar and features 6 ball-end strings. Cobalt is used for its naturally higher magnetic induction to better drive the pickups.
What sound do Ernie Ball Cobalt strings provide?
Thanks to cobalt, the response is described as more immediate and the midrange gains clarity. Picking nuances, palm muting, and bends benefit from more detailed reproduction. These features pertain to the Cobalt Slinky Regular Slinky set.
Is the 10-46 gauge suitable for rock and metal?
The Regular 10-46 classification offers medium tension, balancing playability and tuning stability. This gauge is recommended for rock, metal, and modern pop.
How are the Ernie Ball 2721 strings packaged?
Each set is sealed in an airtight pouch.



