Features: Perfect 6pcs string set universal for folk guitar replacement. 1st and 2nd strings made of high quality stainless steel core, strong toughness. 3rd, 4th, 5th and 6th strings are steel core with copper alloy wound, great tightness and high brass glossiness. Automatically winding strings production provides it even quality and clear, soft and warm tone. Special anti- coated technology for extending its life time. Medium tension, perfect for solo and professional performance. : Color: Gold + Silver Material: stainless steel + alloy Tension: Medium Diameter: 1st: 0.28mm, 2nd: 0.38mm, 3rd: 0.61mm, 4th: 0.81mm, 5th: 1.07mm, 6th: 1.32mm Package Contents: 6 pcs * Guitar Strings Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.