Size A Class 15, Similar to Brother SA-156 bobbins, thickness appr. in 10.5mm
12 bobbin threads in a plastic bobbin holder box, Suitable for All the Janome Machines and most Brother home embroidery machines, Kenmore and some machines of Quantum Futura, Singer machines are also using these bobbins
White, black or other colors are available, customers use these colors mostly, you can use the bobbin thread the same color as the top thread
Professional factory supplies home sewing threads to many famous suppliers in the market