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 ... courses.8,Multiple stop motion sensors in case of error.9,Automatic re-cycling oiler,counter,and reset function.10,Attached ... and foot 7- Tube sock 8- Double welt folding socks 9- Picot design 10- Single hand linking line socks for easy ...