GilaTools 4" Supreme-plus Shark Teeth Turbo Segmented Granite Porcelain Stone Diamond Blade Engineered from high quality military grade hardened steel to provide 100x longer use than other conventional diamond blades Diameter: 4 inch with Flush Cut Holes 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. Heat treated steel core that provides extreme blade strength for deep cutting with minimal vibration Cutting Method: Dry or Wet