Model TY 441 is suitable for sewing heavy weight materials such as safety belts, luggage, ... semi-rotary large capacity shuttle hook, suitable for sewing heavy weight materials. Used for harness, tack, saddlery, ... of presser foot is as high as 20mm, suitable for stitching the extra heavy-weight materials.The machine is ... Long-Arm, Cylinder-Bed, Unison-Feed, Extra Heavy Duty, Lockstitch Sewing Machine