Easy to use: There is a powerful suction cup behind the magnetic seam guide. Simply place it on the sewing machine to sew and hem the fabric effortlessly. Quality and robustness: The high-quality and robust magnetic seam guide requires no sewing experience and is a good helper for those without sewing skills. Precise sewing: The powerful magnetic seam guide does not easily deviate from the direction and can efficiently sew straight or curved stitches. It is an indispensable sewing machine accessory for both professional seamstresses and hobbyists. Compatibility: Universally compatible with all old household or industrial sewing machines. Multifunctional: Can be used as a seam guide, hem guide, positioning aid, anti-pucker, and edge protector.