... lockstitch sewing machine, GB4-1 model is used to sew canvas, container bags, belts, leather, tent, luggage & thick material.Up-and-down ... link take-up system increases the speed of the main shaft and reduces noise, ensuring the quality of the whole machine and prolonging ... -110-280Motor power 550W, 1400rpm (Clutch motor)Net weight of machine head: 78kgNeed bar stroke: 58mmShuttle hook: SEIKO HSH-7-3 ...