Review (1/5): Almost worthless as an adjustment device.
I am a licensed practitioner and had never used this model for instrument adjusting. First, let me say if you are in pain, you would benefit more from having a trained person do a full assessment of the cause of your pain. As far as the instrument itself: the force and speed of the instrument are inadequate to obtain much benefit at all imo. I tried to return this but fell outside of the window of time so, $140 paperweight.