This Review Title is Jack hammer ! and the content is: complete garbage i bought the name brand and it works much better this clone does not do what it says but the name brand one does , this was about to crack my teeth and cost me a ton more.  go to dentist or buy it from a real name brand. Dont risk your teeth it will cost you big bucks to fix..There are other information for this review, one is This reviewer did purchase it and the other is 2 people think this review is helpful.