EXL148 is an extreme hybrid set, optimally designed for tuning guitars down to C, or for players who prefer a heavier gauge string. XL Nickel Wound, D'Addario's most popular electric guitar strings, are precision wound with nickelplated steel onto a carefully drawn, hexagonally shaped, high carbon steel core. The result, strings with long lasting, distinctive bright tone and excellent intonation. • MFSKU EXL148 • UPC 019954962548