The Bernina #51 Roller Foot is a specialty presser foot designed for effortless sewing on challenging materials like leather, vinyl, plastic, suede, and textured fabrics. It features three rollers embedded in the sole, which reduce friction and help feed sticky or uneven surfaces smoothly through the machine, ensuring consistent stitch quality. Ideal for topstitching, bag-making, rainwear, and decorative work, it supports both 5.5 mm and 9 mm Bernina machines. This foot is especially useful when working with fabrics that tend to drag or shift under a standard presser foot, making it a valuable tool for precision sewing on tricky textiles.