Vulcan 932971OR Diamond Blade Continuos Rim, 7"Highlights: Cutting edge sintered on the blade body for safety 2 percent cobalt in the matrix gives superior performance Designed for cutting concrete, stone, brick, block and tile Wet cutting blade with 0. 080" rim edge thickness for power hand saws Synthetic diamonds are carefully selected for hardness to give consistent blade performance 100 times life of conventional abrasive blades 5 8" round arbor 13 16" diamond knockout Dia: 7" Max. RPM: 7,500