【Ｃ-136】 Yamato San-sun zumari #0 (nanasyaku) [2 strings per package.] (Synthetic Bowstring)　ヤマト弦 三寸詰 0号 ２本入り

This string is praised for it's flexibility and durability. It also produces a very nice tsurune and allows the arrow to fly well.

※String Thickness Guide

#0	below 13kg