... adjustable from 1000 to 4000 r/min. power adjustable from 500 to 1400w. DY-X708 COMPUTER SERVO CUTTING MACHINEMULTI-SPEED AND ... also because it has features of efficiency, auto-sharpening, high power, lower noise, low temperature, light weight, smooth operation, small ... .6.) It is a multi-purpose cutter of efficiency, high power, energy saving, stepless sped regulation, light weight, low temperature, ...