The Jack E4S-4 is a direct-drive, 4-thread overlock (serger) machine designed for precise and durable seam finishing. With its built-in servo motor, the machine provides stable, energy-efficient performance while reducing vibration and noise. It can operate at speeds up to 6,000 stitches per minute, making it suitable for high-volume production. Adjustable stitch length and differential feed allow for neat finishes on a wide variety of fabrics, from lightweight to stretch materials. With its compact design, automatic lubrication, and LED lighting, the E4S-4 is ideal for garment factories, tailoring shops, and workshops looking for professional-quality overlocking.