I worked in a store that sold them in the late 80's, very early 90's. If I remember correctly, it only did a 2 thread overlock stitch, but I could be wrong there. The machine was on a swivel base that you could turn to whichever type machine you wanted to use. I don't think we ever sold one and they weren't out very long. We did have one in the store I played with a good bit, though.