3M Scotch-Brite CS-WR Silicon Carbide Medium Deburring Wheel - Very Coarse Grade - Arbor Attachment - 8 in Diameter - 3 in Center Hole - 4 in Thickness - 15338 [PRICE is per WHEEL]3M Scotch Brite CS WR deburring wheel uses silicon carbide as the abrasive material and has a diameter of 8 in. The arbor attachment allows for easy mounting to the tool or pad. In addition to the other aspects of these parts, another important component of these is the thickness. This 3M part is 4 in thick. All abrasive products that rotate or spin, such as the ones in this category, have a maximum speed at which you can run them. This 3M deburring