1)25,000 RPM 2)Forward/Reverse direction Change the speed constantly and discretionarily ranging from 0 to 30000 per minute.Left and right direction of rotation can be chosen.High precision concentricity rotation clamping system configured Japan dedicated high-speed bearings makes high-quality phone with Low heat, low noise and low vibration.Quick change for grinding system without using auxiliary tool can improve work efficiency greatly.Slide-type speed control switch is for easy operation.Packing list:  control box:1   handpiece:1   handpiece braket: 1

            nail bistrique: 1 (4 installed)  manual instructions:1