●Max.high speed up to 6000 S.P.M.
●Easy micro-adjustment of differential feeding ratio;
  even during running operation.(Fig. A)
●Push-button type stitch length regulator.(Fig. B)
●Strong and durable threading tension design.(Fig. C)
●Convenience oil window design,easy to check the oil
  amount.(Fig. D)
●Thread cutting knife design,easy to cut off the chained
  threads even without thread trimming attachment.
  (Fig. E)
●The open-up type looper thread take up cam design.
  (Fig. F)
●Anti-thread winding handwheel design.(Fig. G)