... machine 1)100% cooper wire motor 2)Convenient trigger switch 3)Steady structure,perfect wheel cover design ... technology,powerful and steady motor.Special windhole design,high quality bearing,longtime working,professional quality.1. ... of 2830 r/min and great cutting efficiency.2.Convenient trigger witch with lock-off ... easy wheel changes 2.Export markets:Popular in Europe,North America, the Middle East3. ...