Description: Tool; Drill Rubber Run Steady With Whine And Hum Slow Speed.

Description: Mechanism; Fast Rev Burst With Buzz And Whine Faster Speed.

Description: Mechanism; Fast Rev Burst With Buzz And Whine Faster Speed.

Description: Mechanism; Fast Rev Burst With Buzz And Whine Faster Speed.

Description: Mechanism; Run Steady With Buzz And Whine.

Description: Mechanism; Run Steady With Buzz And Whine.

Description: Mechanism; Run Steady With Buzz And Whine.

Description: Mechanism; Drilling Rev, Run Steady Hum And Whine Slow Speed.

Description: Mechanism; Slow Rev Up / Down Slow Speed.

Description: Mechanism; Buzzy Rev, Steady Up And Down Slow Speed.