plain, terry dual-use computerized sock knitting machine 72-220 needle Cylinder :3.5, 3.75 ... 5 inch knit various sock Richrui computerized sock knitting machine (3-3/4″ plain and terry Dual-use) ... and stitch cam control.6,Electro-pneumatic yarn finger and cam control7,Pattern Depth up to 1, ... knitting.16,Graphic type LCD adopted.Plain & Terry machine can produce the following:1- Various design socks2- ...