Vintage Singer slant shank automatic zigzagger attachment with 4 cams for class 301 & 404 machines. This attachment is in very nice vintage condition with minor signs of use. The original instructions are included, no box. Original, genuine Simanco Part #161103, 160986 or 161158, comes with the following stitch cams #161000, 161001, 161002, 161003. *Please note that this attachment is for use with slant shank machines only