This machine is designed with large vertical rotating hooks for thread loop catchingand sliding bars for thread uptaking .It has been Sub-classed into single needle ,two needle ,single needle with ,Cog belt driving ,plunger pump lubrication and compound feed by needle bar ,presser foot and feed dog provides this series with such splendid features as smooth running quiet working and a long service life .It is also equipped with a safety clutch to prevent the hooks from damage by overduty operation .So it is especially available institching car seat cushions ,safety belts ,safety air bags ,tents ,parachutes ,etc .Suitable for sewing bags ,sofa ,furniture ,sport articles and tents etc .