3M Cubitron™ II T27 grinding wheels feature precision-shaped ceramic grain that, thanks to optimal fracturing, lasts longer than conventional abrasives. Compared to traditional grinding wheels that use aluminum oxide, zirconia, or ceramic grain, Cubitron II grinding wheels remove material faster and stay sharp longer. There is no heating during material removal, so the removal is more efficient. They are suitable for use on a wide range of materials, such as carbon and stainless steels or special alloys.