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, Notice 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Material: Plastic Specifications: T-88, GT 30 Weight: 21g, 10g Product size: 5.6x4x1.1cm, 3.8x2.8x1cm Package List: 1/3pcs Magnetic Seam Guide for Sewing Machine Use