1、Copper Alloy Material: Made of premium copper alloy that these strings are rust resistance, strong and sturdy, comes with a long life span. 2、Excellent Performance: You can get excellent guitar strings that can make each gentle melody and powerful chord sound harmonious, improving the performance! 3、Easy Playing: These strings can be played easily and can be played as smoothly as butter, even newcomers can get an outstanding effect! Choose them with confidence! 4、Easy Carrying: These strings with lightweight and small size that they can be easily taken with you to help with your string replacing at anytime! 5、6Pcs: There are 6 professional strings in this package that they can be used for a long time. You can even shall them with your music partners. Note: 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.