EJ83L ball end gypsy jazz acoustic guitar strings are designed and gauged for rhythm and strumming patterns associated with "Django" jazz-style guitars. Silver-plated Copper is wound on a high carbon steel core, delivering a warm, projecting tone optimal for any Gypsy Jazz style guitar. String Gauges: Plain Steel .010, .014, Silver-plated Copper Wound: .023, .026, .034, .044