For grinding and polishing granite, marble, concrete and concrete products, masonry materials,and all types of natural stone. diamond cutting disc, diamond saw blade, cutting toolsOuter Diameter Bore Segment diamension(mm) (mm) (inch) Diameter(mm) L(mm) wide(mm) H(mm) 105 4" 22.23 30 5 8 115 4.5" 22.23 30 5 8 125 5" 22.23 31 5 8 150 6" 22.23 35 5 8 180 7" 22.23 35 5 8 230 9" 22.23 35 5 8