This is a BRAND NEW  Set of  Single Left Toe Zipper Walking Feet for:

PFAFF 545 Class Walking Foot Machines.

The outside foot has one toe on the LEFT side and teeth on the bottom. (Part #40475; 3/16" (5mm) Width)

The inside foot also has teeth on the bottom. (Part #40474; 3/16" (5mm) Width)

This set of feet is designed for all kinds of general work on leather, upholstery, canvas, etc.

The Single Toe configuration allows you to sew very close to Zippers   Buckles   Snaps   Straps   D Rings   Welting

Check out the bottoms of your feet presser feet. Are the teeth worn? Your machine will feed better with new feet.