Applicable to the over edging operation of thin, moderate and thick material, textile.Due to its automatic lubricating device, the machine operates perfectly and smoothly at low sewing tension, and perfect stable stitches even at high speed seaming.OVERLOCK SEWING MACHINE SERIES WITH FOUR THREADZY766-4FOVERLOCK SEWING MACHINE SERIES WITH FIVE THREADZY 766-5FOVERLOCK SEWING MACHINE SERIES WITH FOUR THREAD WITH DIRECT DRIVEZY 766-4DOVERLOCK SEWING MACHINE SERIES WITH FIVE THREAD WITH DIRECT DRIVEZY 766-5D