1.Every product has a unique Manufacturing Part Number label on the inner package that proves it has been qualified,which include Part Number,Model Number and inspection date information;
2.If you have any questions about the item,please provide us the Manufacturing Part Number for checking,your profits will be guaranteed.
3.It fits for Classical Guitar String.
4.High carbon steel plating silk strings,high-quality carbon steel core,alloy wrapped string.
5.This set includes 6 string:E-1ST:0.23mm/B-2ND:0.28mm/G-3RD:0.41MM/D-4TH:0.61mm/A-5TH:0.81mm/E-6TH:1.07mm