Gauges 10-12-16-23w-10. D"Addario J61 5-String Banjo Strings are the Player"s Choice for many professional bluegrass musicians. Made from top quality plain steel and nickel-plated steel wound strings. 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 banjo.