This model  long-arm cylinder bed two needle machine, with the synchronized feeding of needle、feed dog and presser foot prevents the slippage of materials and forms neat stitches; Adopt sliding thread take-up, imported vertical double rotating hook and forming two lines of lockstitch. The arm shaft and hook shaft are driven by synchro tooth belt. Knob-type stitch regulator and lever type reverse feeding mechanism permit convenient operation. And install clutch safe-device to prevent the damage. Adopt servo motor ,when parking operator can control needle always on the cloth or under the cloth, as to long-arm model, not needing to circumgyrate the hand wheel frequently. It is more convenient to operate. It’s widely used in sewing filter bag、 tents、arch、umbrella、seat cushion、sofa and etc, especially for cylinder products.