Thank you for viewing. This item was received from someone else and appears to have been used for handmade kumihimo (braided cords) as a hobby. Multiple threads are bundled together. There are no labels or markings. I do not know the condition or quality of the product. If you have any questions, please ask in the comments, and I will investigate as much as possible. It is highly likely that these are silk threads from Domyo, but there is no guarantee, so please purchase with that understanding. I am unable to make precise determinations of the detailed specifications or materials. Please check the photos for the condition. Please forgive any oversights as this item has been stored at home.