The Walking Foot High Shank (1 inch long) is a sewing machine attachment used for matching plaids, stripes, machine quilting and identical length pieces of fabric such as draperies. For even feeding of fabrics the teeth on the bottom of the walking foot firmly grip your fabric allowing for even feeding of top and bottom fabrics. No more shifting of multiple fabric layers. Great for quilting or matching plaids. Measure length of shank connected to your pressure foot.