Ernie Ball Hybrid Slinky Bass Strings offer a clear, balanced tone, and each one is crafted in the beautiful Coachella Valley in Southern California using the finest and freshest raw materials. The list of bassists who rely on Ernie Ball Slinky Bass Strings reads like a who's who of the most renowned artists worldwide. The strings come in the following gauges: 0.045, 0.065, 0.085, 0.105.