This presser foot simplifies multiple steps into a single sewing process. The scroll at the front folds the fabric edge under twice, creating a double-turned hem that prevents fraying. A guide in the foot’s sole holds the folded fabric securely, guiding it to the needle hole where a straight stitch sews it into a strong, 4 mm-wide hem. The finished hem smoothly advances under the foot, ensuring a steady, uninterrupted sewing experience.