How to choose the bobbin type for your machine?
Difference Between Size A bobbins and Size L bobbins
The only difference between Size A bobbins and Size L bobbins is the height.
The height of Size A bobbins is 11.4mm/0.448＂；The height of Size L bobbins is 8.9mm/0.315＂. Both bobbins have the same diameter, but size A bobbin is a little taller than size L bobbin.
Size A is used by most sewing machines. If your machine makes regular sewing and also you can do computerized embroidery is very portable that your machine use this type of bobbin.
Machine like Brother Innovis and 400D, Babylock Ellegante and Janome use this type of bobbin.
Size L is the most common embroidery bobbin for commercial and home based embroidery machine.
Choose the bobbin thread for your machine!!!