The Scotch-Brite™ CPM Wheel, a convolute wheel, includes all the benefits industrial professionals have come to expect from Scotch-Brite™ abrasives; the open web technology helps with load resistance and consistent cutting action. What sets this wheel apart is its level of aggressiveness. It's uniquely designed for heavy-duty blending and finishing. - Aggressive, heavy-duty wheel for extra tough blending and finishing applications. Resin bond helps with heat and smear resistance. Non-woven nylon fibers respond to surface imperfections, minimizing gouging.