This is a part for a sewing machine that was used in the past. It allows you to sew decorative stitches when attached to a Riccar sewing machine. It functions without any problems, but the decorative stitch cam case has a chip. Please check the images and only purchase if you understand this. How about for your collection? As a bonus, I will include a copy of the Riccar Mighty instruction manual. It includes the types of decorative stitches and how to set the feed dial and stitch width dial when using them.