Ernie Ball Super Slinky Electric Strings are played by Jimmy Page, Jack White, Jeff Beck, and Angus Young and are designed for consistency, optimum performance, and long life. They are made from nickel plated steel wire wrapped around a hex shaped steel core wire. The plain strings are made of specially tempered tin plated high carbon steel engineered for a well balanced tone. The gauges are .009 .011 .016 .024w (wound) .032 .042.