Wet and dry cutting blade with 0.080 in. rim edge thickness for small hand grinders Synthetic diamonds are carefully selected for hardness to give consistent blade performance Cutting edge centered on the blade body for safety 2 percent cobalt in the matrix gives superior performance 100 times life of conventional abrasive blades Designed for cutting concrete, stone, brick, block and tile stone brick block and tile. 5/8 in. round arbor Max. RPM: 12000