Ernie Ball Power Slinky electric guitar strings are perfect for those who like large gauges for rock and roll or blues. Power Slinkys have long been favored by Slash, Metallica and Kenny Wayne Shepherd thanks to their gauge which gives them a bigger tone. strong and a little more powerful. These strings have been precision engineered to the highest standards to ensure consistency and superior quality. Power Slinky wound strings are made from nickel-plated steel wire wrapped around hexagonal steel wire. Unwound strings are made from specially hardened and tin-plated high-carbon steel to produce a well-balanced sound. Caliber .011, .014, .018p, .028, .038, .048