Premium Professional grade Diamond hole saw core bit (STADEA Super Series) 4" or 102 mm diameter with 9 mm segment height, 3.5 mm segment thickness, 4" overall Height and arbor 5/8" 11 (Made with Premium Diamond) works great on Granite coring/drilling, Marble coring/drilling, Concrete coring/drilling, Tiles coring/drilling, natural stone coring/drilling, Masonry coring/drilling, artificial stone coring/drilling, manmade stone coring/drilling etc. Diamond hole saws drill bits are also known as diamond core drill bits. It is used for drilling/coring through Concrete, Granite, Marble, Granite Tile, Porcelain tile, Marble Tile, Travertine, Terrazzo, Ceramic Tile, artificial and natural stones. STADEA diamond hole saw / diamond core drill bit works with or without water. Core drill bits segments cuts through surfaces in a circle and creates a hole. STADEA Diamond core drill bit / diamond hole saw (Super A Series) are available in multiple incremental sizes starting with 20 mm (3/4") to 102 mm (4").