---
product_id: 17245685
title: "Ernie Ball Regular Slinky Cobalt Electric Guitar Strings 3-pack, 10-46 Gauge (P03721)"
brand: "ernie ball"
price: "€ 48.79"
currency: EUR
in_stock: false
reviews_count: 9
url: https://www.desertcart.hr/products/17245685-ernie-ball-regular-slinky-cobalt-electric-guitar-strings-3-pack
store_origin: HR
region: Croatia
---

# Cobalt alloy for max magnetic output Extended dynamic & harmonic range 3-pack of premium strings Ernie Ball Regular Slinky Cobalt Electric Guitar Strings 3-pack, 10-46 Gauge (P03721)

**Brand:** ernie ball
**Price:** € 48.79
**Availability:** ❌ Out of Stock

## Summary

> 🎸 Elevate your tone, dominate your stage—Cobalt strings for the serious shredder.

## Quick Answers

- **What is this?** Ernie Ball Regular Slinky Cobalt Electric Guitar Strings 3-pack, 10-46 Gauge (P03721) by ernie ball
- **How much does it cost?** € 48.79 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/17245685-ernie-ball-regular-slinky-cobalt-electric-guitar-strings-3-pack)

## 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

- • **Magnetic Mastery:** Cobalt alloy boosts pickup interaction for louder, richer tones that cut through any mix.
- • **Triple Pack Power:** Get three fresh sets of Ernie Ball’s iconic Regular Slinky Cobalt strings—always be ready to shred.
- • **Smooth Playability:** Ultra-slinky feel with perfect tension for effortless bends, slides, and pinch harmonics.
- • **Dynamic Range Unleashed:** Experience crisp highs, strong lows, and harmonics that bring your riffs to life.
- • **California Crafted Quality:** Handmade in the USA with the freshest materials for consistent performance and durability.

## Overview

Ernie Ball Regular Slinky Cobalt Electric Guitar Strings (3-pack, 10-46 gauge) feature a cobalt alloy that enhances magnetic pickup response, delivering increased output, extended dynamic range, and superior harmonic clarity. Made in California with premium materials, these strings offer durability, smooth playability, and a balanced tone ideal for professional guitarists seeking both power and precision.

## Description

Engineered to maximize output and clarity, Ernie Ball Cobalt Slinky guitar strings are one of the latest innovations in string technology. Seeking to provide guitarists and bassists with a new voice, Cobalt strings provide an extended dynamic range, incredible harmonic response, increased low end, and crisp, clear highs. Cobalt provides a stronger magnetic relationship between pickups and strings than any other alloy previously available.

Review: Just get em - I’ve been a guitarist since 1979 , ive been through A LOT of guitar strings. I put a set of these onto a cobra blue Ultra stratocaster HSS and they performed ( are still performing) FLAWLESSLY! Serious bends when playing leads don’t break them , they sound & feel fantastic, keep perfect tuning well and seem to last a very very long time with Awesome Harmonics . Also if 10s are a little thick but 9s are TOO thin , these 9.5s may be exactly perfect for you . I’ll definitely be getting more of these cobalt slinkys in 9.5-44
Review: Sound amazing and feel amazing - I was very scheptical of what these would sound like compared to the hybrid set on my Ibanez, I have A Dimarzio Super Distortion at the neck and a Dimarzio Pro Track in the middle and a Dimarzio x2n at the bridge and the hybrid set sounded good but did have that extra part that was missing in the articulation of heavy riffs and stuff and some of the low end was more muddy sounding and seemed to feel a little off when you set the action and so forth, so i tried out these extra slinky and these blow my mind, its like it still does that low end but it has that extra articulation now with that low notes you get, its insane, and alot easier to pull of pinch harmonics and riffs, ultra smooth fret slides, i am super picky on the guitar, i have my frets polished at 12000 mirror like finish and these just glide so smooth on the frets. If you are ultra scheptical about what strings to get and see so many out there and I am glad i found these as these seem more than good enough for me, now it makes me too addicted to Improv playing again with drum beat in background then playing pc games and stuff :)

## Features

- 3 individual sets of Regular Slinky Cobalt electric guitar strings
- Cobalt produces a stronger magnetic relationship between pickups and strings, resulting in increased output
- Cobalt 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
- Made in California, USA with the finest and freshest materials

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00S2VVKYE |
| Best Sellers Rank | #346 in Musical Instruments ( See Top 100 in Musical Instruments ) #8 in Electric Guitar Strings |
| Body Material | Cardboard |
| Color Name | Regular (10-46) |
| Customer Reviews | 4.7 4.7 out of 5 stars (9,839) |
| Date First Available | February 2, 2015 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.113 ounces |
| Item model number | P03721 |
| Material Type | Other |
| Number of Strings | 6 |
| Product Dimensions | 4.5 x 1 x 5.5 inches |
| Size | 3-Pack |
| String Gauge | .01 |
| String Material | Cobalt |

## Product Details

- **Brand:** Ernie Ball
- **Color:** Regular (10-46)
- **Instrument:** Electric Guitar
- **String Gauge:** .01
- **String Material Type:** Cobalt

## Images

![Ernie Ball Regular Slinky Cobalt Electric Guitar Strings 3-pack, 10-46 Gauge (P03721) - Image 1](https://m.media-amazon.com/images/I/81MMaxxo97L.jpg)

## Questions & Answers

**Q: Are these made from cobalt mined by dwarves in the mines of Moria? Someone on the internets said so.**
A: Now we know why ErnieBall cobalt strings make most magical sound vibrations 🎶mines of Moria, dwarves & elvin magic ✨

**Q: Are they better for finger-picking?**
A: I installed these strings on a 72 fender telecaster thinline with wide range pickups using a fender supersonic 60 watt tube amp and found the sound difference from the Ernie ball super slinky strings I usually use to be harsh. There was more treble then I wanted and an almost chimey sound from the higher notes. This is not a string suited for country music which is what I was playing. It accents the finger picking well by making each individual note stand out more clearly but the louder I played it started distorting and under distortion it was an unpleasant sound. Best stick to the tried and true Ernie ball slinky and super slinky for finger picking. In fact on my american start with single coils the slinky strings sound the best by far for country music. Tuffet to bend then super slinky but a much more rounded tonal quality then these cobalt strings. I hope this review helps.

**Q: are these strings round wound or flat wound?**
A: Strings are round wound.

**Q: Are the 3-packs individually wrapped packages that can be sold separately? Or is it 3 sets of strings in one package?**
A: The 3-packs come in one package, but you can separate them once you open up the package.If this was helpful, please consider purchasing from us. We can help with support after the sale as well. We have it in stock and ready to ship. - Pixel Pro Audio

## Customer Reviews

### ⭐⭐⭐⭐⭐ Just get em
*by S***N on December 5, 2025*

I’ve been a guitarist since 1979 , ive been through A LOT of guitar strings. I put a set of these onto a cobra blue Ultra stratocaster HSS and they performed ( are still performing) FLAWLESSLY! Serious bends when playing leads don’t break them , they sound & feel fantastic, keep perfect tuning well and seem to last a very very long time with Awesome Harmonics . Also if 10s are a little thick but 9s are TOO thin , these 9.5s may be exactly perfect for you . I’ll definitely be getting more of these cobalt slinkys in 9.5-44

### ⭐⭐⭐⭐⭐ Sound amazing and feel amazing
*by T***Y on November 7, 2025*

I was very scheptical of what these would sound like compared to the hybrid set on my Ibanez, I have A Dimarzio Super Distortion at the neck and a Dimarzio Pro Track in the middle and a Dimarzio x2n at the bridge and the hybrid set sounded good but did have that extra part that was missing in the articulation of heavy riffs and stuff and some of the low end was more muddy sounding and seemed to feel a little off when you set the action and so forth, so i tried out these extra slinky and these blow my mind, its like it still does that low end but it has that extra articulation now with that low notes you get, its insane, and alot easier to pull of pinch harmonics and riffs, ultra smooth fret slides, i am super picky on the guitar, i have my frets polished at 12000 mirror like finish and these just glide so smooth on the frets. If you are ultra scheptical about what strings to get and see so many out there and I am glad i found these as these seem more than good enough for me, now it makes me too addicted to Improv playing again with drum beat in background then playing pc games and stuff :)

### ⭐⭐⭐⭐⭐ Awesome Strings for Metal.
*by B***Q on December 23, 2025*

These strings are pretty good for the music I play. This is the reason I gave five stars. For Heavy Metal, Modern Rock, Classic Rock, or pretty much anything using distortion, these cobalt strings are great. My only regret is that I should have gotten a larger diameter set. I normally run this size string with other types, but the fatter ones using cobalt definitely sound like they rip. I have no complaints and this size, though. They still sound great. The only thing I noticed was there seems to be a little more fret buzz, but an adjustment would fix that. You cannot hear it through an amplifier, though. When playing clean tones, these things are super bright sounding. Not bad, but I like regular material better. Metal, I don't think you can go wrong.

## Frequently Bought Together

- Ernie Ball Regular Slinky Cobalt Electric Guitar Strings 3 Pack - 10-46 Gauge
- D'Addario Accessories Pro-Winder Guitar String Winder, Cutter, Bridge Pin Puller - All in One Guitar Tool - Black
- Ernie Ball Regular Slinky Nickel Wound Electric Guitar Strings 3 Pack - 10-46 Gauge

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-01-25*