Bobbin Case for Singer 20U/Jack JK-20U
Part No: BC-DBZ(1)NBL6 & B18370270A0
The no back lash bobbin case is designed to prevent snagging and bird nesting with a brake spring which puts constant light pressure on bobbins to overcome momentum.
Made in Japan by Towa.
If for any reason you are unsure this bobbin case will fit your sewing machine please do not hesitate to send us a message with your make and model number and we will be happy to confirm.