Silk thread, silk yarn, silk blend, cone winding Bulk sale - The two on the left are 100% silk thread. They are new and unused. No scratches or stains are visible. - The thread on the right is a silk blend. The blend ratio is unknown. This one has been used, and as shown in the last image, there are stains. It has been rewound. These items have been stored at home for a long time. There is some deterioration due to aging. Thank you for your understanding.