Features:Function: The magnetic seam guide attaches to metal throat plate on sewing machine.Purpose: Ideal for ensuring uniform seam width and as a guide to straight stitching.Anti Slip Design: Anti-skid design prevents magnets from sliding around.Material: Lightweight rust-free ABS resin construction compare to traditional metal body.Wide Application: The sewing machine guide magnets can be widely used in most of household multi-functional sewing machines,Notice1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Material: PlasticWeight: 25gSize: 6.7x4x1cmInstallation: Bottom magnets adsorptionApplicable models: Universal modelsFunction: Built-in scale