# Size 20, 500m in length. This is the last of the 4 sets I have for sale. I got these cheaply from an acquaintance, and I'm selling the ones I won't use. The acquaintance used to make clothes, so I think the fabric is good, but I don't know the material. I'm not very knowledgeable about fabrics, so I'm selling them at a bargain price. (Please consider the product images) Perfect for handmade projects! Instant purchase OK. Size 20, 500m, 100% polyester. Unopened. The outer plastic may be dirty, but the contents should be fine. Stored at home. Thank you for your understanding. m(_ _)m # Button sewing thread # Industrial button sewing thread # Stitching # Commercial thread