3M Cloth Portable Belt 777F features a blend of 3M ceramic abrasive grain and aluminum oxide for increased durability and cutting efficiency and is suitable for moderate stock removal to finishing operations. The heavy, water-resistant YF-weight cloth backing supports high-pressure applications, works well on heat-sensitive metals, and can be used in wet or dry applications. 3M ceramic aluminum oxide 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 stainless steel and other exotic metals. Durable resin bond resists deterioration from heat, extending the life of the belt.