50pcs Clear Plastic Sewing Machine Bobbin With 2 storage boxes, consists of 25 slitless sewing machine bobbins, including a sturdy plastic storage box. Convenient to reserve and take away.Standard size: Fits most sewing machines - Bobbin size: Standard size can be used on most sewing machines like Brother, Babylock, Janome, Kenmore, Singer, etc. Ideal for beginners with a glue machine or a sewing machine.Convenient to use: the case and spool are made of plastic with clear vision, so easy to see which color to choose, durable and practical.Simple Design, Works Well: Simple design style will cover your sewing needs; Easy to browse and use, it can help you quickly complete a project or make clothes. The corners of the transparent sewing machine bobbins are smooth and shiny, without thread breakage; You can wrap wire on it comfortablyConvenient transparent plastic storage box, the spools are protected, orderly storage is easy to open and close, you can quickly find the thread color you want.Easy to use - Wrap the threads you need and start sewing Clear Spool Box - Super easy to find exactly the color you are looking for Durable to use - It can also use rust for a long time High Compatibility - Compatible with most home sewing machines such as Brother, Yes Brother, Babylock, Janome, Kenmore, Singer, etc. Specifications: Material (coils): plastic Dimension (coils): 2.4 x 2.4 x 1.14 cm (L x W x H) Storage box dimensions: 13 x 10.5 x 2.6 cm The package contains: 50x empty sewing machine spool 2x storage box