DW-521E is the machine with single carriage . single system and no comb device. It is simple but has all functions of computerized knitting machine (except for hookup yam). Its advanced needle-transfer technology controlled by step motor enables this type to have outstanding performance on needle narrowing, flowers twisting and holes picking (like lace).
With ingenious carriage and high speed, it can Knit high quality sweaters because of the running of single system while knitting each line. Cheap . easy to operate and maintain, it is the best choice to substitute hand-drive flat knitting machines.