Ernie Ball Regular Slinkies. The Regular Slinky electric guitar strings are made with precision for ultimate balance, long life and performance. The wound Ernie Ball Slinky strings are made with nickel-plated steel, wound around a hex-shaped steel core, while the plain strings are a tempered tin-plated high carbon steel. Ideal gauge for rock guitarists. Ernie Ball Regular Slinky gauge: 10, 13, 17, 26, 36, 46.