Seam Guide, Featherweight Accurate - BLACK boxed ** Cord is suitable for

** Cord is suitable for the Singer Featherweight terminal receptacles that have the 3 rounded-pins and will not be suitable for the 3-flat pinned receptacles (most common for 220 volt machines)

If you are wanting an original box

Place fabric and cord under presser foot with cord under groove of foot and raw edges to right

As you can see from this link

Seam Guide, Featherweight Accurate - BLACK boxed ** Cord is suitable forThe "Featherweight Accurate Seam Guide" available in black or clear acrylic. Fits the Singer Featherweight 221, 222, as well as most all other vintage Singer models (i. e. 15, 66, 99, 127, 128, 185, 201, 301, 319, 401, 500, etc.) Each guide 3 16" thickness, and the acrylic helps keep the bed of the machine protected from scratches. Featuring the darling gold decals on a black or clear surface to match the classic Featherweight design. Includes screw