---
product_id: 58101367
title: "Ernie Ball Power Slinky Cobalt 7-String Electric Guitar Strings - 11-58 Gauge"
brand: "ernie ball"
price: "173 zł"
currency: PLN
in_stock: true
reviews_count: 13
category: "Ernie Ball"
url: https://www.desertcart.pl/products/58101367-ernie-ball-power-slinky-cobalt-7-string-electric-guitar-strings
store_origin: PL
region: Poland
---

# Cobalt alloy for max output 11-58 gauge dynamic tone 7-string extended range Ernie Ball Power Slinky Cobalt 7-String Electric Guitar Strings - 11-58 Gauge

**Brand:** ernie ball
**Price:** 173 zł
**Availability:** ✅ In Stock

## Summary

> 🎸 Power your riffs with the ultimate 7-string edge!

## Quick Answers

- **What is this?** Ernie Ball Power Slinky Cobalt 7-String Electric Guitar Strings - 11-58 Gauge by ernie ball
- **How much does it cost?** 173 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/58101367-ernie-ball-power-slinky-cobalt-7-string-electric-guitar-strings)

## Best For

- ernie ball enthusiasts

## Why This Product

- Trusted ernie ball brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Extended Sonic Range:** 7-string design delivers deep lows and sparkling highs for versatile play.
- • **Proudly Made in the USA:** Craftsmanship you can trust, supporting quality and consistency.
- • **Unmatched Magnetic Power:** Cobalt alloy boosts pickup response for electrifying sound clarity.
- • **Durability Meets Precision:** Tin-plated high-carbon steel core ensures long-lasting tension and tone.
- • **Engineered for Maximum Output:** Optimized to amplify your signal and cut through any mix effortlessly.

## Overview

Ernie Ball Power Slinky Cobalt 7-String Electric Guitar Strings (11-58 gauge) feature a cutting-edge cobalt alloy that enhances magnetic pickup interaction, delivering superior output, clarity, and dynamic range. Designed for serious players seeking strong lows and crisp highs, these strings combine durability with precision, all crafted in the USA for consistent professional performance.

## Description

Buy Ernie Ball Power Slinky Cobalt 7-String Electric Guitar Strings - 11-58 Gauge. Free delivery and returns on eligible orders.

Review: Tell me you’re into heavy metal, without telling me you’re into heavy metal... - I actually used this on my 6 string and it handled drop G#, no problem. All the heavies. Much djent. Pick-up-a-pancake.
Review: Holds up well to use - I always get these for the 7, great feel and they last well with repeated use.

## Features

- Cobalt produces a stronger magnetic relationship between pickups and strings than any other alloy previously available.
- Cobalt 7-string electric guitar strings provide an extended dynamic range, incredible harmonic response, strong low end, and crisp, clear highs.
- Wound strings consist of Ernie Ball’s Cobalt alloy wrapped around a tin-plated high-carbon steel core wire.
- Engineered to maximize output and clarity.
- Made in the USA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B009YPC4YC |
| Best Sellers Rank | 3,534 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 162 in Guitar Strings |
| Body Material | Metal |
| Colour | Power (11-58) |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,797) |
| Date First Available | 25 Nov. 2012 |
| Item Weight | 36.3 g |
| Item model number | P02729 |
| Material Type | Steel |
| Number of Strings | 7 |
| Product Dimensions | 10.8 x 1.27 x 13.97 cm; 36.29 g |
| Size | Power |
| String Gauge | 11-58 |
| String Material | Cobalt Steel |

## Product Details

- **Brand:** Ernie Ball
- **Colour:** Power (11-58)
- **Instrument:** Electric Guitar
- **String gauge:** 11-58
- **String material type:** Cobalt Steel

## Images

![Ernie Ball Power Slinky Cobalt 7-String Electric Guitar Strings - 11-58 Gauge - Image 1](https://m.media-amazon.com/images/I/81qg411XWEL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Can these strings handle drop G?**
A: I haven't tried drop g, but I Play in drop G# no problem. I have a 26.5 scale length, so if you have a 27' it would definitely work. Probably not with a 25.5' though

**Q: would these things handle adgcfad tuning? I'm new to guitars and I wanna jam to some Korn**
A: These can take ADGCFAD perfectly fine the strings themselves are good for 25.5 inch scale length but even better on a guitar with 26.5 inch scale regardless they have clarity bite and good feel and I highly recommend them for all styles of music.

**Q: I need serious advice. Could I use the lower half of these on my 6 string, just to play music for one band? (Deftones)**
A: Yes, you can and I have as long as your bridge will fit the strings through it.  You will definitely need to adjust the setup though and the longer the scale length the better.

**Q: What is the gauge of the 3rd string supposed to be? My set came with 2 13's**
A: Gauges for the Ernie Ball 2730 set are: 10-13-17-30-42-52-62.  Thanks!

## Customer Reviews

### ⭐⭐⭐⭐⭐ Tell me you’re into heavy metal, without telling me you’re into heavy metal...
*by R***T on 25 April 2021*

I actually used this on my 6 string and it handled drop G#, no problem. All the heavies. Much djent. Pick-up-a-pancake.

### ⭐⭐⭐⭐⭐ Holds up well to use
*by V***A on 15 November 2025*

I always get these for the 7, great feel and they last well with repeated use.

### ⭐⭐⭐⭐⭐ Get these if you have a 7 string
*by S***N on 19 February 2020*

More and more I've recently been gettings severely miffed with my entry level LTD 7 string, even to the point of thinking about selling it. The low B was too floppy and a nightmare to tune and the whole guitar sounded dull. This was a last ditch attempt to make me like the 7 string, so I chose this set, being heavy at the bottom end and the same gauge as my 6 string at the top. They've made the whole guitar sound like a different instrument entirely. No more floppiness on the low B, tuning stability vastly improved and everything feels far more tight and precise. Not sure how people who prefer a light gauge would find the lower end strings, but being a bass player as well, it wasn't a problem for me. Sticking with these strings from now on.

## Frequently Bought Together

- Ernie Ball 7-String Power Slinky Cobalt Electric Guitar Strings, 11-58 Gauge (P02729)
- Ernie Ball Power Slinky Cobalt Electric Guitar Strings, 11-48 Gauge (P02720)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-03-19*