The Twin Welting Foot has two “grooves” on the underside of the foot, and is used to make trim for your home dec projects like pillows, cushions and other home accessories. You can also make trim to cover raw edges on your upholstery, which you can then attach with a staple gun. It’s quick and easy to make and insert welt cording. The TwinWelting Foot works the same way as the Piping Foot but is designed for larger sizes of cording. Create your own trim when the color you want isn’t available! Fits most models of Pfaff sewing machines.