La Bella HRS-90 El. Guitar RWNP, String Set for 9-String Electric Guitar, String gauges: .009, .012, .015, .022w, .030, .040, .054, .074, .090, Thicker cores for standard and drop tuning, Material: Nickel-plated steel, Round wound, Lighter and more durable sound, Highly flexible for string bending and improved sustain, Packaged in a modified atmosphere to prevent tarnishing and maintain freshness, Made in USA