For elastic and stretch materials, serging, and neatening edges. Creates a flat, elastic seam. For 5.5mm and 9mm machines.Compatible with: 125, 125 S, 130, 135, 135 S, 140, 145, 145 S , 150, 153, 153 QE, 155, 160, 163, 165, 170, 180, 185, 200, 210, 220,...