Quantity: 10pcs metal empty bobbins is enough to use for a normal daily using. Easy to thread and use, can help you finish a project or make clothes fast and essentially. Hight quality metal bobbins can be reused many times, with security notch for consistent bobbin thread winding. Great for pre-winding your embroidery bobbin thread to have ready when needed, and for keeping extra bobbins on hand for winding sewing thread colors to suit your projects. Wide application: sewing machine bobbins are compatible with most for Janome models, for Singer models and some for Brother models, they are helpful for your home use. Material: metal. Size: 20mm*11mm. Color: show as pictures. There might be a bit color distortions due to different computer resolutions. There might be a slight error due to different hand measurement. 10 * Sewing Machine Empty Bobbin. Fit most sewing machines, for Brother, for Janome, for Kenmore, for Singer, etc These bobbins are made of high quality metal, durable and practical Simple design, work well: a simple design style will meet your sewing needs Easy to thread and use, can help you finish a project or make clothes fast and essentially Smooth edge: the edge of clear sewing machines bobbins is smooth and glossy, will not break the thread; You can wind thread onto them conveniently