Snap on the Narrow Zipper Foot to stitch extra close to zipper teeth, snaps, snap tape, beads, etc. This foot can be snapped on in only one position, therefore your sewing machine must be able to adjust needle position to the left / right.
The Zipper Foot is the most important zipper tool and will help you stitch the zipper perfectly in place. When attaching any zipper, it is important to sew right next to the edge of the zipper teeth. You can do that with the narrow Zipper Foot.
The difference with the CY7306 is that the CY7306-2 is flatter/smaller. Can be used on many multifunction portable household sewing machines with top bobbins (top loading) and bottom bobbins (front loading) as long as the needle position can be changed to the left/right.