3M ceramic/aluminum oxide grain blend surpasses aluminum oxide abrasives in cut-rate Durable ceramic/aluminum oxide blend extends belt life, producing more parts per belt and requiring fewer belt changes Heavy, YF-weight polyester backing supports high-pressure, tough applications and can be run wet or dry Contains a grinding aid to reduce heat and increase performance when used on stainless steel and other exotic metals Durable resin bond resists deterioration from heat, extending the life of the belt