Review (5/5): works great!
I bought this to treat my mule, but found me using it more and more on myself lol.
I can't make it to the chiropractor, to the masseuse etc on a regular basis with my life and work schedule. So a couple of these to the area works great.
To those that say this is a medical device and could cause permanent damage, you cannot damage yourself with this unless you ingest it.
This does not deliver a punch that would hurt someone. It merely acts on the small area you are needing relief of.
Even the chiro books say you can't do damage with this, even if you push as hard as you can, the punch it delivers is suppressed by the weight of your push.
I like it, use it and my coworkers (we are all medical) are using it too