This machine adopts link-typed feeding mechanism,needlw bar thread taling up,and looper thread catching to produce two lines of chainstitch ,which is firm and dlastic,suitable for lapping seam and decorative seam on garment,underwear,bedding articles and leather goods,There are five different gauges available for selection.HF0059-A is high speed single needle chainstitch sewing machine.HF0059/-1/-2/-3 are two needle chainstitch sewing machines.