Green packaging. Ernie Ball Slinky 2230 guitar strings are made from pure nickel wire wrapped around tin-plated, hex-shaped, steel core wire. Produces well-balanced, all-around good sound. All Ernie Ball strings are precision manufactured to the highest standards and most exacting specs to assure consistency, optimum performance, and long life. Ernie Ball is the pioneer of rock and roll guitar strings. Setting the standard for the industry has enabled Slinky strings to become the world's top selling brand. Jimmy Page, Eric Clapton, Steve Vai, and Slash are among the long list of Slinky players. 2230 - 08 / 08 / 10 / 10 / 14 / 08 / 24w / 11 / 32w / 17 / 14 / 22w