Ultra-beautiful violin strings, used for only one week! This is a set of Infeld Blue A, D, and G strings, and a Warchal Amber E string! Rising star violinist Ririko Takagi also uses this set! Infeld Blue is characterized by a powerful, clear tone, with a clear high register and a deep, rich low register. The Warchal Amber E string is known for preventing the string from "flipping" (producing a whistling sound). The part of the string where the bow makes contact is spirally wound, and this spiral helps prevent the string from flipping. I replaced the strings with these new ones one week before a performance, and then switched to different strings after the performance, so they are in very good condition. I bought them for 10,500 yen, so this is a great deal. I hope they can be of use to someone.