Size: 3.8 cm in length, 3.6 cm in width / 1.5 * 1.4 inches. Time-saving design: Using these thread spools to prevent the thread from tangling or winding up. This sewing thread organizer will always keep thread neat, clean and organized. Durable Plastic: Plastic spools are stronger and leak proof than reusable cardboard spools for many years. Flat shape with smooth finish and not easy to bend, so the floss won't snag. Unique design: there are two floss clips on each board to hold the end of the line stuck, you can also label them with a marker for easy reference. Thread Storage: This cross stitch floss organizer pack is compatible with metal ring to keep plastic floss spools organized all the time, good tool as organizer friendship bracelet chain.