GilaTools 7" Speedy J-slot Porcelain Tile Diamond Saw Blade Engineered from high quality military grade hardened steel to provide 100x longer use than other conventional diamond blades Diameter: 7 inch Segment Height: 10mm. The concentrated bonded diamond matrix makes this blade the most preferred in the industry for accurate and smooth precision cuts Arbor/Bore Size: DM 7/8 inch - 5/8 inch Cutting Method: Wet only