16 Bobbins for Singer Featherweight 221, 301 #45785 16 Bobbins for Singer Featherweight 221, 301 SEWING MACHINES Bobbin Part # 45785 This bobbin Fits All Vintage Singer Featherweight Models Including 221, 221K, 221J-Tan Featherweight, Free-Arm Featherweight 222, 222K. Also fits Singer model 301, 301A.