Description: Tool; Drill Rubber On Glass Hum, Slow, Faster And Off.

Description: Tool; Drill Rubber On Glass Whine, Fast Rev.

Description: Tool; Drill Rubber On Glass Hum, Slow, Faster And Off.

Description: Tool; Drill Rubber On Glass Hum, Steady Slow Speed.

Description: Mechanism; Long, Steady Run, Whine, Buzzy Faster Speed.

Description: Mechanism; Long, Steady Run, Whine, Buzzy Faster Speed.

Description: Mechanism; Long, Steady Run, Whine, Buzzy Faster Speed.

Description: Mechanism; Long, Steady Run, Whine, Buzzy Faster Speed.

Description: Mechanism; Long, Steady Run, Whine, Buzzy Faster Speed.