Blue Fire Quick-Change Cloth Discs, Zirconia Alumina, 3 in Dia, 50 Grit

Features : Premium, versatile, self-sharpening zirconia plus grain provides aggressive cut and longer life | Semi-open coat minimizes loading on soft metals (aluminum, brass, and bronze) and wood, as well as stainless and carbon steels | Durable Y-weight, polyester waterproof backing stands up to demanding applications: high-pressure and hard-to-grind exotic alloys