Singer Featherweight 221 Sewing Machine, WHITE EV986*** color-gray traditional ‘swell’ being the original BOO-FRM20897-157 Model:99K EL1771 indicates an original bundle

traditional ‘swell’ being the original blade (and most common) followed by the cut of the smaller scallop-edged blade (the most scarce to find) and the last being a cut from the straight-edged cutting wheel

including the Bakelite receptacle* that plugs into the machine

slowly and precisely

The most common black stitch length indicator with the silver outline came on all US Featherweights from 1946 to 1957

but it will be one of those tools you won't ever want to be without

Singer Featherweight 221 Sewing Machine, WHITE EV986*** color gray traditional ‘swell’ being the original BOO FRM20897 157 Model:99K EL1771 indicates an original bundle traditional ‘swell’ being the original blade (and most common) followed by the cut of the smaller scallop edged blade (the most scarce to find) and the last being a cut from the straight edged cutting wheel including the Bakelite receptacle* that plugs into the machine