A serger is a specialized sewing machine designed to create professional-looking seams and finish edges. It uses multiple threads to stitch and trim fabric simultaneously, which helps prevent fraying and gives garments a clean, polished appearance. Sergers are commonly used in garment construction, quilting, and crafting. Unlike traditional sewing machines, which typically use one or two threads, a serger can use three, four, or even five threads. This allows for various stitch types, such as overlock and rolled hems. Many sewists appreciate the efficiency and speed of a serger, making it a valuable tool in the world of sewing and fashion design.