Thumb Nut, Tension, for Singer 221/222 Featherweight & 301
The chrome knob / thumb nut for the top thread tension on the Singer 221 & 222 Featherweight, and for the 301 & 301A.
The chrome knob / thumb nut for the top thread tension on the Singer 221 & 222 Featherweight, and for the 301 & 301A.
