Weiler surface grinding wheel uses aluminum oxide as the abrasive material and has a diameter of 6 inch. Weiler incorporates this aluminum oxide material into the surface grinding wheel forming a grit of 36. 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 Weiler part is 3/4 inch 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 Weiler surface grinding wheel can be run at a maximum speed of 4100 rotation per minute.