You will most likely either gasp or chuckle at how I ended up with the two slits in my 'oh-so-vibrantly-vintage-tablecloth'
They are uncommon little attachments that accommodate either a 5/32"
LOW SHANK (ONLY): This attachment fits the Singer Featherweight 221
These are original lint brushes that would have come with a Vintage Singer Machine
Vintage Original Featherweight Case for the White Singer Featherweight 221K
Slide Cover Plate for Singer 401 kit You will most likely eitherThis is a slide bobbin cover plate for a Singer Sewing Machine models 401 (401A), 403 (403A), 404 (404A), 500 (500A), 503 (503A), 600, 603, 604, 620, 620E31, 625, 626, 628, 629, 630E, 635, 636, 638, 639, 640E, 645, 646, 648, 649. This will NOT fit a Singer Featherweight.