IVY Classic 38046 Swift Cut 9-Inch Dry and Wet Cutting Segmented Diamond Blade with 7/8-5/8-Inch Arbor, 1/Card Designed to cut stone, brick, block and concrete, Swift Cut (Registered Trademark) Swift Cut Diamond Blades - Outstanding performance at a reasonable price Quality engineered diamonds with a bonded matrix and steel core State of the art automated manufacturing technology Arbor: 7/8-inch - 5/8-inch, Rim Width: 2.5mm, Rim Height: 7mm, Max RPM: 6,400