Premier Zirconia Alumina Resin Fiber Discs, Ceramic, 4 1/2 in Dia, 80 Grit

Ceramic abrasive provides longer 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.