Package IncludesYou will receive 240 plastic thread spools packed in a storage box, each spool is 43.7cm. 5 different colors are contained. MaterialThis plastic thread spool set is made from premium PET board, which is sturdy and durable. They can be used with DMC metal rings or other organizers. User-Friendly DesignEmbroidery floss spools are designed with two floss clips to keep the end of the line stuck, you can also mark them with a marker for easy reference. UsageThese bobbins can help you organize and detach leftover embroidery threads, easily store needles, prevent tangling and sort them easily. ApplicationThese plastic yarn holders will help you save yarn, twisted yarn, paper tape, etc. Greatly avoid the situation of various twisting or intertwining silk threads.