Electronic feedback controller. Enchances overall torque and performance at low and mid-speed ranges.Variable speeds (5.000-33.000 RPM). Provides increased control & precision.Separate on / off and variable speed buttons. Provides easy access and convenient speed adjustments.Digital LCD readout. Provides accurate speed readouts in 1.000 RPM increments.“Soft Start”. Allows the tool to come up to a selected speed graduallyErgonomic design. Balanced, easy to handle and comfortable to use.Unique fan design. Maximizes airflow for cool motor performance.