GilaTools 4.5" Supreme-plus Power Wave Core Continuous Rim Turbo Granite Porcelain Stone Diamond Blade Engineered from high quality military grade hardened steel to provide 100x longer use than other conventional diamond blades Diameter: 4.5 inch with Flush Cut Hole Segment Height: 10mm Arbor/Bore Size: 7/8 inch - 5/8 inch Cutting Method: Dry or Wet