Erhu bow hair, white horsehair. Length: Approximately 79cm, Mongolian origin Includes thread for securing the hair. The ends are pre-processed for easy setup on the bow, so you should be able to replace it relatively easily. If the hair is strung and rosin is applied, you'll at least get a sound. But, just because you get a sound doesn't mean it's okay! The surface of the hair wears down from rubbing against the strings, and the grip gradually diminishes. Also, since you're playing by stretching the hair, its elasticity gradually decreases. Yes, there's a chance it's turning into a "difficult-to-play bow" without you realizing it. It's hard to notice the timing when you use it every day. If you thought "Aha!" during the following self-check, replacing the hair will greatly improve your performance! 31.1-inch super bow hair made from unbleached Mongolian horse tail hair. I also have many other musical instrument supplies and parts for sale. Thank you! (*^^)v 【Notes】 ・Shipping is closed on weekends and holidays; it will be shipped on the next business day. ・Basically, if payment is made by 3 p.m., there is a high possibility of same-day shipping. ・All items are sent with free shipping. ・We have stock, so you can buy directly without commenting. ・We will send it in simple packaging. Please check the shipping method as it varies depending on the product. ・If you purchase multiple items, there will be a discount on shipping costs. Please contact us via comment before purchasing. ・The color may differ slightly from the actual product due to lighting conditions and monitor differences. ・We try to answer questions as quickly as possible, but please note that there may be delays depending on the timing. ・We will exchange or refund for initial defects, so please contact us before rating. We may not be able to respond after the rating.