Features: Quality sewing machine sewing bobbin and case made from durable materials ensure long lasting performances. Precisely designed and accurately manufactured, these accessories provide stable and precise sewing results. Suitable for sewing enthusiasts, beginners, and commercial users, these accessories are essential tools for various sewing project. Whether it is for home sewing, garment factory, or crafting, these accessories can be used in a wide ranges of sewing scenarios. Upgrades your sewing experience with these easy to install accessories compatible for multiple sewing machine models. Specifications: Material:Steel Bobbin Size:Approx.21x9mm/0.83x0.35in Option Type:5xSewing Bobbins and 1xSewing Bobbin Case;20xSewing Bobbins and 4xSewing Bobbin Case;6xSewing Bobbins and 6xSewing Bobbin Case; 30xSewing Bobbins and 4xSewing Bobbin Case; Package Includes: Package A; 5xSewing Bobbins 1xSewing Bobbin Case Package B; 20xSewing Bobbins 4xSewing Bobbin Case Package C; 6xSewing Bobbins 6xSewing Bobbin Case Package D; 30xSewing Bobbins 4xSewing Bobbin Case note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.