The cams on the lower and the upper dials of this machine is reatured with closed tracks design with cams of knit, tuck and miss.The yarm feeding segment can be adjusted independently which can knit elastic double jersey fiber by installing an additional lycra apparatus,which is also equipped with different types of cylinders,easy to alter,which can meet the everlasting demand of the knitting market,this machine can produce various kind of high quality double jersey fiber of different level of thickness.The speed of this machine is very fast with simale stucture.The mechanism is stable and convenient to operate and the range of fiber pattern is wide.It can be converted into Double jersey Rib circuar knitting machine after altering the cams.