NORTON 66243530067 - 4" DIAM, 3/4" HOLE SIZE, 1/2" OVERALL THICKNESS, 60 GRIT, TYPE 12 TOOL & CUTTER GRINDING WHEEL - 4" DIAM, 3/4" HOLE SIZE, 1/2" OVERALL THICKNESS, 60 GRIT, TYPE 12 TOOL & CUTTER GRINDING WHEEL MEDIUM GRADE, ALUMINUM OXIDE, K HARDNESS,...