... sock Richrui computerized sock knitting machine (3-3/4″ plain and terry Dual-use)1,One main feed plus five pattern ... ,Automatic re-cycling oiler,counter,and reset function.10,Attached floppy disk driver(Compatible with MS-DOS and WINDOWS)11,Available in 220 ... /60HZ.12,Fully A.C Servo motor adopted.13,Minimized and easy operating function.14,battery back-up to protect stored ...