This machine adopts a double straight needle, vertical automatic refueling rotary shuttle for thread hooking, and a sliding rod for thread picking, forming a two row double line lock stitch.

Synchronous toothed belt drive with upper and lower shafts. Adopting needle bar swing and feeding method, knob type dial pitch and lever type reverse feeding mechanism.

Pull back the spring of the sewing thread inside the shuttle core to ensure consistent sewing effect between the bottom thread and the top thread.

Suitable for sewing coats, uniforms, jeans, bags, decorative seams, etc.