What Size Bobbins Will Work In My Embroidery Machine?

We offer two sizes of machine embroidery prewound bobbins, namely style L and style A (also referred to as Class 15).  Both the L style and A Style embroidery bobbins are smaller in size, roughly equivalent to the size of a nickel. Style L is compatible with most commercial embroidery machines as well as many home machines. On the other hand, style A or Class 15 bobbins are suitable for many home machines exclusively. 

We have put together a comprehensive chart of which home embroidery machines use the style L bobbin vs. the style A.  You can also check your embroidery machine's instruction manual for more guidance.