Product review (5 stars): It Works!
It works! I was about to call a plumber to fix my garbage disposal and likely saved myself $100+ bucks. Initially, I though that the disposal was broken and when trying to turn it using the wrench, it wouldn't budge. I stayed with it for about 10 minutes and eventually it worked! So, if you have a "hum" in your gargabe disposal and it's not turning, this can save you money.  I learned about this handy little gadget on YouTube!