GilaTools 4.5" Continuous Rim Turbo Granite Marble Contour Cutting Diamond Blade Engineered from high quality military grade hardened steel to provide 100x longer use than other conventional diamond blades Diameter: 4.5 inch Segment Height: 9mm. The concentrated bonded diamond matrix makes this blade the most preferred in the industry for accurate and smooth precision cuts Arbor/Bore Size: 7/8 inch - 5/8 inch Cutting Method: Dry or Wet