This machine is equipped with unison feed machanism and vertical-axis double capacity hook, as well as the walking fofot, with safety clutch for preventing hook breakage. It is and ideal product for sewing heavy material, such as car seats, sofas, bags, seat belt, etc.

Keywords：Lockstitch sewing machine,JA4420/JA4410-Single/double Needle Compound Feeding Lockstitch Sewing,

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