Concord Blades CBT00750SP 3/4 Inch Continuous Turbo Dry/Wet Diamond Hole Saw with Carbide Pilot Crown Segment Width. 8mm Segment Height & 3/8" Inch Shank Can be used Dry/Wet Cleanly Cuts Granite, Marble, Porcelain, Artificialand Natural Stoneand More Max RPM 12,000-use wet only