... knit tabby, rib, mesh, terry, semi-terry, terry-jacquard, elastic jacquard, double-color socks heel, big socks heel, multi-layer ... stripe, etcMain material used: 16s 21s 32s cotton yarn, woolen yarn, polyester yarn or blended yar etc.sub-material: covered spandexwelt part ... motor controls the adjustment of tension and yarn and rubber knitting density6. Yarn Road and Cams are controlled by the ...