Tension Discs Set of 2, Tension Unit,Singer (Vintage Original) thread (If you are not sure

(If you are not sure if the Pinking Attachment will work with your model machine

the extra long shaft absorbs the torque

A Blind Stitch Braider Attachment applies braid to the fabric on the front side (opposite of the underbraider)

Singer Wrinkle Featherweight 221 with a serial number of AF589*** indicates commission date of August 15

Tension Discs Set of 2, Tension Unit,Singer (Vintage Original) thread (If you are not sureThese are the discs in the tension unit that the upper thread goes through. These discs need to be free of oil, lint, and dust, so that there is no obstruction in the thread path, or variation in tension. They come in a set of 2. Look under the video tab if you need to know how to put the tension unit together, or if you are unsure about what piece you need.