Gauges 11-15-22-30-40-50. 3 polishing steps produce an incredibly smooth finish on D"Addario Chromes ECG24 Electric Guitar Strings. Nickel-plated steel under winding on hex cores with chrome ribbon winding. G string is wound. 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.