... 3-1/2"plain 72-168 needles Cylinder :3.5,3.75, 4, 4.5,5 inch knit various sock Max speed: 320rpm 3-1 ... /2"plain computerized sock knitting machine Feature: 1,One main feed plus five ... finger and cam control7,Pattern Depth up to 1,200 courses.8,Multiple stop motion sensors in ... 220/380/415V.3phase 50/60HZ.12,Fully A.C Servo motor adopted.13,Minimized and easy operating ...