Premium Material: These floss bobbins are made from PP, offering durability and resistance to breakage for a long lifespan. Design: Each card features two thread clamping slots to secure the ends of your threads, with the option to label them for easy reference. Organizational Tool: Suitable for keeping your threads organized and untangled, these winding boards offer a simple and convenient way to categorize your sewing materials. Versatile Use: Not just for threads, these winding boards can also be used to organize ribbons, fishing lines, cords, jewelry making wires, laces, and more. Bulk Pack: With 200 pieces per pack measuring 3.8*3.5cm each, this set makes an great gift for friends and family who like sewing and organizing. Specification: Material: PP Size Chart: 3.8cmx3.5cm/1.50inchx1.38inch Package Includes: 200 Floss Bobbins Note: Please allow slightly errors 1-2cm differences due to manual measurement.