Ernie Ball Not Even Slinky Nickel Wound Set, .012 - .056 Made in California, U.S.A. Featuring the finest and freshest materials. Played By Legends around the world including Slash, Jimmy Page, Metallica, Eric Clapton, and more... Element Shield Packaging Prolongs string life and keeps strings as fresh as the day they were made Recipes and Popular gauges created by industry icon Ernie Ball Ernie Ball strings are made from the finest materials so you get quality and consistency in every set