... picker point and double down pickerMotor : AC servo motorComputer : Jinheng computer system Speed : 300-320 RPMOnly used for make plain socks, can ... the same course.3,Drumless,fully electronic control system.4,Exclusive inner cam block system for high speed.5,Stepping motor for ... up to 1,200 courses8,Multiple stop motion sensors in case of error.9,Automatic re-cycling oiler,counter,and reset ...