Thank you for viewing. This is a set of 23 large spools of woolly nylon thread for industrial use, previously used in a sewing factory. Ideal for overlock and cover stitch machines, and suitable for sewing knit and stretch materials. ◎ Highly elastic ◾︎ Material: 100% nylon ◾︎ Condition: Partially used (long-term storage) * Due to long-term storage, there may be some wear and tear on the paper cores.