Power cord for a Singer 15-91, 301, 306K, 306W, 319, 401, 403, 404. The rubber molded plug that goes into the machine can have a very firm grip as it is pushed into the machine, so just be sure to push it in securely.
This is the Power Cord only for Singer machines: 15-91, 301, 306K, 306W, 319, 401, 403, 404.
If you need a new Foot Controller cord for a Singer 301, 401, 403, 404 they are sold separately here