This is an on-o (sound string) for jiuta shamisen. I use it on my thicker Tsugaru-jamisen (Gidayu). Because it's the same width as the thread path on the koma (bridge), the strings are aligned straight, resulting in a clear, crisp sound that resonates well with the tenjin (headstock). I was taught about it by my Tsugaru-jamisen teacher. It's made of high-quality silk with a beautiful luster. The actual color is a slightly deeper green than in the photos. - Color: Deep Green - Design: Simple - Material: Silk Thank you for looking.