Cut through ductile and cast iron pipe, concrete lined water pipe, sewer lines and heavy duty PVC with the special blend of silicon carbide and aluminum oxide abrasives of this Gemini Ductile HD SC/AO Type 01/41 high speed cut-off wheel. Three full layers of reinforcing (compared to the standard two layers) offers durability on heavy-duty ductile, pipe and heavy duty PVC applications. With a patented universal arbor, this wheel fits either a 1 inch or 20 millimeter arbor and offers an economical price compared to a diamond blade. Package of 10.