Gathering Foot #16 is suitable for gathering lightweight-to-medium weight  fabrics. The fabric is gathered automatically while being sewn.

What’s 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 isn’t 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.