GOOD QUALITY GENERIC BUTTON CLEARANCE PLATE FOR HUSQVARNA VIKING #4131056-01 Button Reed Foot for All Viking Models and All sewing machines BUTTON CLEARANCE PLATE FOR HUSQVARNA VIKING SEWING MACHINE #4131056-01 Use thin end for thin fabrics and thick end for heavier fabrics. The Clearance Plate creates a thread shank when sewing buttons in place. Each end is a different thickness for more or less thread shank It also can be used when sewing over heavy seams to balance the height of the foot.