Nominal hooks 400 to 2400 Type double cylinder Frame Strongly build cast iron frame designed to Give better acceleration Hooks Are of steel. Bending on special machines Needles Are of steel. Bending on special machines Lift Long, short Spring box Made from compressed and teak wood. Needle plates Are of aluminum Cylinder Are of aluminum Hooks knife Made from dragged flat for better operation Needle, hook guide Are of steel strips. Drive Driven by jacquard chain connect on crank shaft of machine