Lockstitch Zigzag Sewing Machine adopts fork feed ,needle movement, link thread take-up, bid hook ,and top and bottom feed to fo For Lockstitch Zigzag Sewing MachineIt adopts fork feed ,needle movement, link thread take-up, bid hook ,and top and bottom feed to forms zigzag sewing .It's strong sewing ability ,perfect performance and steady stitch ,It's convenient maintain because of the forward ...