1. For cutting Granite and marble 2. Turbo segment for better dust removal 3.Special holes on the core for better cooling diamond cutting disc, diamond saw blade, cutting toolsOuter Diameter Bore Segment Segment (mm) (inch) Diameter(mm) wide(mm) Height(mm) 105 4" 20 1.8 7 110 4.3" 22.23 1.8 7 115 4.5" 22.23 1.8 7 125 5" 22.23 2.0 7 150 6" 22.23 2.0 7 180 7" 22.23 2.2 7 200 8" 22.23 2.4 7 230 9" ...