Thank you for viewing. This is a partially used sewing thread that has been stored for a long time. Please check the remaining amount in the photos. It is a 3000m spool of thread. - Color: Black, Gray系 (gray-toned) - Material: Sewing thread - Quantity: 45 spools - Uses: Handicrafts, dressmaking, embroidery Compatible with household sewing machines. I do not have knowledge about the thread, so I cannot answer detailed questions. If there is someone who can make use of this for dressmaking or handmade crafts, please consider purchasing.