Weiler Tiger Ceramic cutoff wheel uses ceramic as the abrasive material and has a diameter of 4 1/2 in. Weiler incorporates this ceramic material into the cutoff wheel forming a grit of 60. In addition to the other aspects of these parts, another important component of these is the thickness. This Weiler part is.045 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 cutoff wheel can be run at a maximum speed of 13300 RPMs.