La Bella HRS-73 El. Guitar RWNP, String Set for 7-String Electric Guitar, String gauges: .010, .013, .017, .030w, .042, .052, .064, Thicker cores for standard and drop tuning, Thickness: Medium tension, 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