Dritz Plastic Class 66 Bobbins 4 Count 930. 

Class 66 Bobbins. 

Four top drop-in bobbin cases. 

Consult you sewing machine manual to determine type of bobbin needed. 

Fits some the following machines: Singer, Baby Lock, Brother and Simplicity. 

Consult your sewing machine manual to determine type of bobbin needed.    

CHK-930