Button Sew-On Foot #18 is used for sewing buttons & hooks on quickly and easily. The rubberized sole holds the button firmly in place. For 5.5 mm and 9 mm machines. Button Sew-On Foot #18 is an all-rounder for sewing on buttons, snap fasteners and eyelets. Its non-slip sole holds the button securely in place while it is sewn on. In addition, Button Sew-On Foot #18 has an adjustable middle toe, allowing you to vary the height of the thread shank according to fabric thickness. The middle toe can be flipped up and away when not in use. In addition to buttons and closures, Button Sew-On Foot #18 allows you to attach decorative embellishments such as sequins or bows.