FUNCTION: Edge Guide Positioning Anti-Curling Pressing Line Easy to Use,NO INSTALLATION REQUIRED: Step1:Secure the seam guide on the metal sewing machine with the magnets. Step2:Adjust the sewing clip height by rotating the screw based on the cloth thickness. Step3:Press the cloth firmly with the clip. Step4:Turn on the sewing machine,moving the cloth straightly. PACKAGE: Magnetic Seam Guide x 1 Note:Due to the magnetic properties,if your sewing machine lacks a metal plate under the presser foot, you will need to use a sticky metal plate to secure your magnetic seam guide in place.