Function introduction 1.One feeder for main yarn,four colors for patterns. 2.Copy double cylinder. 3.Two feeders for main yarn, making cross patterns 4.Can make invisible socks and 3D socks and special kind socks. 5.Five colors in one line, there are 10 colors in the socks pattern. 6.High heel big heel , small heel,180 degree against sock outh, two colors for socks heels, socks toes. 7.Back up battery can save the storage programs. 8.UPS device can keep knitting. 9.Taking the double shovel-needle technology, when knitting the heel and toe, the angle is adjusted by computer in this way, can improve the efficiency, overcome the hortching of sidle Shovel needle.