Pfaff Twin Welting Piping Foot
To stitch covered welt cord into a seam on your sewing project, place the covered welt cord on the right side of the fabric along the seam line. Place it under the Welting foot with the welt cord in the groove of the foot. Stitch the welt cord to the fabric.
USAThis foot looks like it would be very helpful in upholstery projects