--- product_id: 58101367 title: "Ernie Ball Power Slinky Cobalt 7-String Electric Guitar Strings - 11-58 Gauge" brand: "ernie ball" price: "€ 31.17" currency: EUR in_stock: true reviews_count: 13 category: "Ernie Ball" url: https://www.desertcart.pt/products/58101367-ernie-ball-power-slinky-cobalt-7-string-electric-guitar-strings store_origin: PT region: Portugal --- # Extended dynamic range & harmonic clarity Cobalt alloy for max magnetic pickup output Proudly made in the USA Ernie Ball Power Slinky Cobalt 7-String Electric Guitar Strings - 11-58 Gauge **Brand:** ernie ball **Price:** € 31.17 **Availability:** ✅ In Stock ## Summary > 🎸 Elevate your riff game with the power of cobalt clarity! ## 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?** € 31.17 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/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 - • **7-String Versatility:** Expanded range with strong lows and crisp highs for modern players. - • **Durability Meets Feel:** Tin-plated high-carbon steel core ensures long-lasting playability. - • **American Craftsmanship:** Precision-made in the USA for consistent quality and reliability. - • **Engineered for Clarity:** Maximized output and harmonic detail for professional sound. - • **Unmatched Magnetic Power:** Cobalt alloy boosts pickup response for richer tone. ## 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 a dynamic range with strong lows and sparkling highs. Engineered with a tin-plated high-carbon steel core, these uncoated strings offer durability and superior tonal clarity. Made in the USA, they are the go-to choice for serious 7-string players seeking professional-grade performance and reliability. ## 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 | 5,280 in Musical Instruments & DJ ( See Top 100 in Musical Instruments & DJ ) 217 in Guitar Strings | | Body Material Type | Metal | | Brand Name | Ernie Ball | | Coating Description | Uncoated | | Colour | Power (11-58) | | Customer Reviews | 4.7 4.7 out of 5 stars (1,813) | | Finish Type | Uncoated | | Global Trade Identification Number | 00749699127291 | | Instrument | Electric Guitar | | Item Type Name | Electric Strings | | Item Weight | 0.08 Pounds | | Manufacturer | Ernie Ball | | Manufacturer Part Number | P02729 | | Material Type | Steel | | Model Name | Power Slinky | | Model Number | P02729 | | Product Warranty | None. | | Recommended Uses For Product | Guitar | | Set Name | Power Slinky | | String Gauge | 11-58 | | String Material Type | Cobalt Steel | | UPC | 749699127291 | | Unit Count | 1 count | ## 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) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/58101367-ernie-ball-power-slinky-cobalt-7-string-electric-guitar-strings](https://www.desertcart.pt/products/58101367-ernie-ball-power-slinky-cobalt-7-string-electric-guitar-strings) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-22*