Gathering Foot #16 is suitable for gathering lightweight-to-medium weight fabrics. The fabric is gathered automatically while being sewn.Whats more, the special indentation in the sole of Gathering Foot #16 allows you to sew the material being gathered to a flat piece of fabric in a single operation. For this, the flat material is slipped into the indentation so that it isnt gathered at the same time. Gathering Foot #16 is available in two different widths. The wider version is designed for use with sewing machines with a stitch width of up to 9 mm.Gathers individual fabric layers, also it gathers and sews onto a flat fabric, for thin and medium fabrics, for 5.5mm machines.