... is suitable for sewing heavy weight materials such as safety belts, luggage, tarpaulins, tents, book bindings, etc. This machine is equipped with ... in bobbin winder, which can be reached with ease during sewing.The machine incorporates a built in bobbin winder, which can be ... TY441 Long-Arm, Cylinder-Bed, Unison-Feed, Extra Heavy Duty, Lockstitch Sewing Machine