Vintage Singer 66, 99 and class 201 sewing machine darning and embroidery attachment set, Simanco part #160720. This set includes the #160718 sprung darning foot with thumb screw and the #160721 feed dog cover plate. The original instructions and box are included. Very nice vintage condition, clean and rust free with minor signs of use such as light surface scuffs. *Coloration of the attachments may vary from the example shown, may have black or silvertone components.