Product description: Material: plastic Colour: transparent Size: 9.8*11.8cm Scope of delivery: 2 * Sewing Machine Bobbin Case 50 * coil Pack of 50 transparent plastic sewing machine bobbins with 2 storage boxes, consists of 25 thread-free sewing machine bobbins including a storage box. STANDARD SIZE FITS MOST SEWING MACHINES - Bobbin Size: Standard size can be used on most sewing machines such as Brother, Babylock, Janome, Kenmore, Singer etc. Ideal for beginners using an embroidery machine or a sewing machine. Convenient to Use - The case and spool are made of plastic with a clear view, so easy to see which color to choose, sturdy and practical. SIMPLE DESIGN, WORK WELL: Simple design style will meet your sewing needs; Easy to go through and use, can help you quickly finish a project or make clothes, corner of the clear sewing machine bobbins is smooth and shiny, not to break the thread; You can wind thread onto them conveniently