Adjustable Ruler Foot with Slit #72S. For more efficiency. Switch foot without cutting the thread. For quilting with 1/4-inch-thick rulers. For free-motion quilting. Combine with Couching Inserts for couching. For 5.5 mm and 9 mm machines. For fast change to other presser feet. This adjustable foot allows you to sew along a ¼-inch-thick Plexiglass ruler and create decorative quilt designs such as lines, feathers and circles. The markings on the inside and outside allow for precise sewing, and the dial lets you adjust the height of the foot individually to the fabric thickness Thanks to the slit in the Adjustable Ruler Foot #72S, you can change a sewing foot without having to cut the thread. This allows an easy transition from Rulerwork to other applications. The foot is compatible with Couching Inserts. and Echo-quilting Clips