Gauges: 11-14-24-32-42. D"Addario J96 Cuatro Puerto Rico Strings feature stainless steel plain strings and silver-plated wound strings in a set of 10. For over 200 years, D"Addario has led the way in string technology. Innovations such as computer controlled windings, laser micrometer inspection, and closed-loop tension control systems result in unrivaled quality and consistency. 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 Cuartro Puerto Rico.