Knut is right I know thw 105-25 is for sewing moccasins,so the 104-25 is the same machine only a flatbed,the top foot can be adjusted to make shorter stitches than the bottom so you have the ruffled look.The bad thing is on their shoe type of machine like this model the hook runs the different that the standard machine & makes a weird looking stitch on the bottom side.Just sew on some leather before you buy it & you'll see what I mean.
Bob