Round wound. Nickel-plated steel wrap wire. Bright, true sound.
Color-coded ball ends.
D'Addario is the world's largest manufacturer of strings for musical instruments. Many top guitarists won't play any other brand. Regardless of your playing style, D'Addario has a set of strings that's right for your electric guitar.
A string is an easy thing to take for granted, until you don't have any. Stock up now.