Vintage Singer automatic zigzagger attachment with 4 cams, compatible with low shank machines including the model 15, 66, 99, 128, 201, 221 & 222K Featherweight, etc. Very nice vintage condition, the attachment is clean and rust free. The original instructions & box are included, the box will show typical wear and may vary from the version shown. Original, genuine Simanco part #160985, 161157 or 161102, comes with the following stitch cams #161000, 161001, 161002, 161003. *Please note that this attachment is for use with low / straight shank machines only