42 sewing bobbins. The sewing thread holder holds 42 sewing thread spools to prevent tangling of the spools. Material. The sewing thread holder is made of PP material, which is environmentally friendly, durable, sturdy and practical. Transparent design. The sewing thread organizer can protect and store sewing threads, easy to open and close, you can find the desired thread color quickly. Durable. The bobbin case is not easy to break, will not be deformed and can be reused. Use: Embroidery thread organizer for storing, sorting and transporting, ideal for sewing thread spools. Description. Sewing thread box with smooth surface, not easy to break, suitable for different sizes of sewing thread spools. Sewing thread organizer is made of PP material, will not be deformed and can be reused. The sewing thread holder is designed to organize and sort your threads, keep them clean and dustproof. Ideal for storing and transporting your bobbins. Caution. Measured by hand, please allow for slight errors in size. Colors may vary slightly due to different screens. Color: Clear Dimensions. 23.7*13.7*6.6cm Package includes 1 * Sewing thread box