The Heavy Duty Lightweight Double Needle Bag Closer Machine is a portable, industrial sewing machine designed for securely closing pre-made bags with high efficiency, capable of closing about 550 bags per hour. It features twin needles and a double thread parallel chain stitch that provides strong, reinforced, and durable closures suitable for various bag materials like HDPE, jute, paper, woven PP/PE, cotton, burlap, and more.