Grip-Rite GRCTDB7P 7-Inch Premium Tile Blade - Wet only 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 5/8-Inch arbor 7-mm Segment height 8,730 RPM Wet only