JustAbitCrazy

IDT is Pfaff's top feed dogs. It's a small black toothed foot that slides into a groove on the underside of most Pfaff feet. It's there all the time unless you disengage it (then it stays popped up out of the way in the back) and it's very unobtrusive, not like big clunky add-on walking feet some machines have. And since it fits into the underside of most of the accessory/specialized feet, you have even feeding of both top and bottom fabrics all the time, no matter what kind of sewing you are doing. (Can you tell I'm a huge fan? Love my Pfaff!)