Usage Tips:Feature: 1. 25 SPOOLS SEWING THREAD SET: Prewound bobbin thread comes with 25 colors of sewing thread, enough for daily use, provide great convenience for your life 2. TRANSPARENT STORAGE BOX: Each spool is placed in a separate slot, keeping them organized. Transparent plastic case makes it easy to choose colors for orderly sewing 3. STANDARD SIZE COMPATIBILITY: The thread and bobbin set is standard size, suitable for most sewing machines. Used for beginners using embroidery or sewing machines 4. MATERIAL AND QUANTITY: Adopt plastic and polyester material, specification is 25 colors(random color), suitable for most sewing machines, very versatile 5. CONVENIENT AND VERSATILE: The sewing bobbin thread set is suitable for a variety of sewing projects, ensuring you have the right color for every task Specification: Item Type: Prewound Bobbin Thread Material: Plastic and polyester Specification: 25 Colors(random color). Package List: 25 x Sewing Thread 1 x Plastic Box