This set consist of a left zipper foot with teeth and an inner foot to make the complete set.
The left toe zipper foot (240133) will have the toe to the left of the needle while the foot is facing the sewist.
It is used for cottons when you want to grip the fabric with the teeth on the bottom. Ideal for heavier cottons, denim, canvas.
Inner Foot: 240153
Zipper Foot: 240133