1/8in thick for Low Shank machine quilting with the appropriate ruler foot. Designed by machine quilting author and teacher, Angela Walters, Squiggy is the go-to tool for machine quilting serpentine lines and wavy designs. Features- Creative Grids grip prevents slipping Black and White dashed guide lines are visible on all fabric colors Mirror image design allows you to quilt multiple width borders with the same tool Seam guides guarantee accuracy Stopping points ensure a continuous quilting design. Use Squiggy for quilting: serpentine lines in both directions in 2 and 3 inch borders and sashings; overlapping serpentine lines; varied serpentine lines; allover ribbons; ogees; clamshells and more! This Low Shank version is 1/8 inch thick so it works well on domestic sewing machines. To learn more, view a video demonstration. Total Size - 4in x 6-1/2in, 1/8in thick