Ceramic Alumina is a synthetic mineral with a high performance abrasive grain. It is manufactured by a 1200 to 1500 C sintering temperature chemical process vs. fusion process. Fused Alumina and ceramic grains consist in essence of the same chemical elements, Aluminum and Oxygen. Ceramic is recommended in the grinding of mild steel, stainless steel, tool steel, titanium alloys, and in general hard metals.
Fits 10'' Expander wheels.