Grip-Rite GRCTDB4P 4-Inch Premium Tile Blade - Wet and Dry Cut Engineered to cut porcelain, ceramic, marble and granite High diamond-concentration matrix is the key to the long cutting life and fast cutting speed of the blade Designed for wet or dry cutting Continuous rim allows for smooth chip-free cuts on marble and tile 7/8-Inch to 5/8-Inch arbor 7-mm Segment height 15,000 RPM Wet or dry