This is a shamisen pick (bachi) for Tsugaru-jamisen. The manufacturer is Toa Gakki. It's a new, unused plastic pick for beginners. Since it's unopened, the exact size is unknown, but according to the same specifications, the opening is 8.3cm and the total length is 16.7cm. It's not very flexible but is durable and hard to break, offering good cost performance. I'm selling it because I have a duplicate of the same product. I'm not very knowledgeable, so please check the images and description and purchase only if you understand and agree.