Complete Unit - Control Box, Straight Handpiece, On/Off Foot Pedal. 35,000 RPM motor. That's 15,000 higher than the old Acrotorque! Easy switch for forward/reverse tip movement. Choose to operate with either manual speed controlling knob, or change over to the variable speed foot switch. All with the flip of a button! Smaller engine not only stores more power, but may also be stored easier; it's 25% smaller! Head is self locking, no more twisting and turning to remove. Just pull apart!