Just because the bags are sealed doesn't mean the tools have never been used. They are cleaned, sealed in bags, and put in an autoclave to be sterilized. http:

Just because the bags are sealed doesn't mean the tools have never been used. They are cleaned, sealed in bags, and put in an autoclave to be sterilized. http://en.wikipedia.org/wiki/Autoclave http://en.wikipedia.org/wiki/Autoclave