D'Addario XT Nickel 45-105 strings. These coated strings maintain both the strong build and stability features with extended performance. The product unites a NY Steel core with nickel-plated steel wrap while utilizing Fusion Twist technology, which results in reliable durability and multifunctional versatility for musical styles. Players seeking both tight tonal lows and crisp high tones should choose the Regular Light Top/Medium Bottom gauge (45-105).