The set comes with 25pcs colorful line sewing machine bobbins in storage box, which are made of durable iron material for practical use. You needn't to search the bobbins everywhere anymore, because the transparent case has well organized your bobbins, and the case also protects your bobbins from physical and chemical harm. Features - Color: Assorted. - Material: Plastic. - Size: Approx. 2.5x2.5x1.5 cm/0.98x0.98x0.59 inch. - 25 Pcs bobbins with colored sewing thread is enough to use for a normal daily using. - Those bobbins are suitable for domestic sewing machine. - The set comes with a storage case, very organized with each bobbin in separate slots and easily to see which color to choose. - Various colored line can easy meet you DIY sewing machine needed. - Perfect for anyone just starting out with an embroidery machine or a sewing machine.