Use this foot switch in conjunction with the MO2580 dial speed control to give you better control on your flexshaft.
Dial the speed you desire and press the foot pedal. Your motor will spin only at the speed you have selected. You get no varied speed from your foot slipping. Need more speed, just dial it in.
Can also be used in conjuction with small polishing motors and benchtop drill presses that have built in speed controls.