This is a set often used in shops and by players. This combination works with any instrument. The combination is as follows: 1E: Goldbrokat E string 2A: Dominant string, synthetic core/aluminum wound 3D: Dominant string, synthetic core/aluminum wound 4G: Dominant string, synthetic core/silver wound 0.27 ball-end type Regarding the 1E string, the 0.27 gauge provides a good balance with the 2A, 3D, and 4G strings. I purchased this from the stringed instrument specialty shop Positive on Rakuten Ichiba, but I am selling it because I ordered the wrong size. The G string's bag is wrinkled, but the string itself is not damaged.