Ernie Ball's 8-String Slinky Nickel Wound Strings are intended for use with eight-string electric guitars. Each wound string features a tin-plated high-carbon steel hex core wire wrapped with a nickel-plated steel wire, while the plain strings are made of specially tempered tin-plated high-carbon steel. The resulting set provides a warm and balanced tone. This eight-string set is gauged .010 - .074.