Specifications: Made of colored coated copper alloy. Long service life. Tunes stable, sounds great. Suitable for acoustic guitar. Make your guitar more perfect. Good tools to replace the guitar string, a good gift for guitar beginners. Item Name: Guitar StringsMaterial: Steel, Copper Alloy Quantity: 6 Pieces in 1 Set Chain Length:E String (1): 88cm/34.65" (Approx.) B String (2): 88cm/34.6" (Approx.) G String (3): 90cm/35.43" (Approx.) D String (4): 90cm/35.43" (Approx.) String (5): 85cm/33.46" (Approx.) E String (6): 85cm/33.46" (Approx.) 6 Different Color Strings Standard: E String (1) 0.011" (0.28mm) Stainless Steel B String (2nd) 0.015" (0.38mm) Stainless Steel G String (3rd) 0.024" (0.61mm) Red Brown WoundD String (4th) 0.032" (0.81mm) Yellow Brown WoundString (5) 0.042" (1.07mm) Blue Brown WoundE String (6) 0.052" (1.32mm) Green Brown Wound Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Included: 6 x Guitar Strings