Considered the Cadillac of abrasive grits, silicon carbide is the fastest cutting and longest lasting of all the abrasives available. It contains no free silica, and eliminates the static electricity generated by aluminum oxide abrasives. It is unique because as it breaks down, smaller sharper cutting edges are exposed allowing extended life to the particles. We offer this abrasive in 2 grit sizes 120 girt and 220 grit. These items cannot be expressed shipped.