Nylon 6 string set for classical guitar from Cristal Corum series in mixed tension (high tension basses, normal tension trebles), that provides time-tested, premium-quality strings, great playing feel and reliability. Set contains nylon Cristal trebles that are produced from a new improved nylon with optimized crystallinity, with a surface treatment controlled by a computer using laser beam and photoelectric cells that permits a real precision a regularity of the gauge; and Corum polished-silver-wound basses which conception has been based on the reduction of internal rubbings – strings vibrate very little with extended sound and increased sound level. Gauges: .028, .032, .040, .029, .035, .044.