Low-shank Darning Foot w/ Large Hole 4021-L Large-holed darning foot for most generic low-shank sewing machines. Details: This foot is designed for free motion embroidery, stippling, darning and monogramming.Skipped stitches are no longer a problem; as the needle moves up and down, so does the spring-loaded foot. This foot allows excellent fabric control (no flagging) while the stitches are being formed as well as movement of the project freely under the foot. PART# 4021-L