The Ernie Ball Regular Slinky Bass strings deliver fundamental lows and brilliant highs, made from a tin-plated steel core wrapped in nickel steel. These strings are the standard among bass strings, and the list of bassists who rely on Ernie Ball Slinky strings reads like a "who's who" of the most famous artists worldwide. Thanks to the dry climate in California's Coachella Valley, the strings remain fresh in their airtight packaging until opened, just like on the day they were made. The strings come in the following gauges: .050, .070, .085, .105.