3M Trizact microreplication technology delivers an extra long lasting, consistent cut on hard or soft metals. Industrial quality belts are great for finishing, polishing, shaping, and blending in various metalworking applications. Full flex, JE weight rayon cloth backing easily conforms to contoured surfaces providing control and a consistent finish. Self sharpening, aluminum oxide abrasive material runs cool and stays sharp throughout entire life of belt. Closed coat, resin bonded. Dry applications.