... machine is equipped with unison feed mechanism and semi-rotary large capacity shuttle hook, suitable for sewing heavy weight materials. Used for ... , purses, etc.With powerful unison feed, the machine can sew accurately and easily several sheets of heavy weight materials piled up together ... Space420mmMeas.0.19 CBM TY441 Long-Arm, Cylinder-Bed, Unison-Feed, Extra Heavy Duty, Lockstitch Sewing Machine