Brother Walking Foot (5mm) 
The walking foot is a moving feed system that holds and moves fabric between the presser foot's upper feed dog and the machine's lower feed dogs to better control difficult fabrics as well as multiple layers of fabric.
The walking foot is great for sewing when matching prints or plaids or when fabric drift is an issue or quilting
Walking Feet are not for use in reverse or side to side sewing as well as some built-in stitches that include other than forward movement of the feed dogs.
 
Art. No XC2165002
 
Art. No XF2339001
F034N