CSC416M T-11 Grinding Cup Stone Silicon Carbide Metal-Backed (10 Pack)TYPE 11 GRINDING CUP STONES WITH METAL BACKING Silicon Carbide APPLICATIONS: Concrete, Stone, Cast Iron and Non ferrous Metals For grinding and cleaning applications Coarse grit wheel for tough grinding applications Excellent for cleaning castings, mold marks, removing flashing Box of 10 Prop 65 Warning: This product can expose you to chemicals, including Phenol, Formaldehyde, and Sulfur, which are known to the State of California to cause cancer or