High G or GCEA tuning (bass to treble), all plain strings. Gauges, from treble side to bass side, 1st to 4th, are about 025 031 038 027 in thousanths of an inch. Made in Italy from a synthetic material called New Nylgut, a formulation of polymerized plastic mixed with additives and patented by Aquila. It has the closest sound to gut strings we have heard.
