3 Styles: 10x8cm/3.9x3.1 inches, hole: 6mm; 6.5x5cm/2.6x2 inches, hole: 5.5mm; 13x7.75cm/5.1x3 inches, hole: 5.5mm; Quantity: 30pcs each style, 90pcs bobbins totally, Enough quantity and size to meet your daily use and make your embroidery sewing easier Paper Wire Winding Boards: Made of quality Kraft paper, it is durable and not easy to deform. These paper wire racks can not only help to holding thread, skein, keep the thread neat and clean, in case various threads will be in chaos, but can also be used with other organizers to save space Thread Organizer: These bobbins can help you organize various threads such as embroidery thread, yarn, string, skeined thread, waxed thread, etc., for various sewing craft projects. They are an essential gadget, help you to manage and use a variety of wire efficiently Easy to Use: This set of thread cards can be wrapped with different colored threads and wrapped with a floss winder. Prevent them from knotting, very convenient to classify. Works well with different kinds of fabric ribbons, silk ribbon, satin ribbon, Christmas ribbon, plaid ribbon, etc Wide Application: After each cross-stitch, embroidery, needlework, sewing, DIY crafts and other projects, these bobbins can organize and store the scattered threads for easy use next time, helping to keep the thread neat and keep home tidy. Also great for hanging tags, gift cards, bookmarks, etc