This foot can be set to sew on each side of the zipper by adjusting the position of the foot and tightening the thumb screw. Also great for sewing close to piping.

Narrow Zipper Foot | Part Number: 611406002 (front load)
Fits Janome, Elna Front Load bobbin machines, low shank

Zipper Foot E | Part Number: 829801002 (5mm-7mm)
Fits Janome, Elna 5mm-7mm machines

Zipper Foot E | Part Number: 859805009 (9mm)
Fits Janome, Elna 9mm machines