Premier Red Zirconia Alumina Resin Fiber Discs, 4 1/2 in, 50 Grit

Features: Ceramic abrasive provides unequaled life and values | Heavy Y weight polyester backing provides excellent durability and grain adhesion | The grinding aid produces longer life and cooler cut | Ideal for heavy-grinding of welds, gates, risers and parting lines on castings and carbon steels | A particularly good choice for stainless steel and other hard-to-grind materials