620142796 Fits S21 & S25 Expand the opertunities with the Overlock Kit which includes the following: Gathering Foot- makes it easy to gather fabric Elastic foot- add elastic to garments and control the amount of contraction Blind Hem & Lace Foot- sew invisible hems or apply lace easily Piping Foot- create and insert piping into home dec projects Taping Foot- Stabilise and prevent seams stretching