This is a loop string made of Asa-ka string for Kyudo (Japanese archery). Raw thread: Mercury2 Brown Specification: Futasun-nobi (approx. 2.4m bow length) Compatibility: Koyama style Thickness: Thick It appears that not many arrows have been shot with it!! Instant purchase is OK. Used with a Chokushin II Carbon 18kg and a Kokoro 15kg bow. The serving has been changed to new black. It was frayed, but I applied flex's loop wax, so the fraying has been considerably reduced. This Asa-ka string can now only be ordered at the Terauchi Kyugu store! There is a high possibility that it will become a premium item in the future. The raw thread is Mercury2, which has a fast initial velocity and doesn't wobble, making it a very good raw thread. Also, because of the large number of strands, the bow is less likely to wobble, making it easier to handle even for those who are not yet good with their hand position! Although it is brown, it looks almost the same as Gosei string. Recommended for those who don't want to be criticized by loop string haters! But still want to use a loop string! Asa-ka strings are very well made, so the string loops are very tight and hardly change shape! Free shipping. Price negotiations and discounts are welcome. I will add photos if you comment.