I ordered the various grits of sandpaper I will need to restore my blade today. (silicon carbide)

I found some sandpaper in my garage today http://solutions.3m.com/wps/portal/3...gl8F154R5LGRbl and am not sure if I can use it or not. It does not say what it is made out of and I have spent some time searching the web. I do not want to ruin my blades by using this. If it is okay to use, I would like to get a jump start on sanding.

The outside of the package says Sandblaster Automotive Sandpaper 120 grit