Features 1、[Quick Firm] It is made of high quality adamas material, with fast drilling speed, saving time and effort, and improving work efficiency. 2、[Sharpened Cutter Head] The cutter head is sharpened, the drilling speed is fast, and the large displacement cutting design is adopted. 3、[Specification] The color of the drilling hole saw bit is blue, and the opening aperture is 32mm, the total length is 68mm. 4、[Enough Quantity] There are 2 pieces of marble drill bits in the package, which can meet your work needs to replace old ones. 5、[Wide Application] This marble hole opener is suitable for drilling granite, ceramic tiles, concrete, marble and other materials. Specification Item Type: Marble Hole Opener Material: Adamas Color: Blue Opening Aperture: Approx. 32mm / 12.6in Total Length: Approx. 68mm / 26.8in Female Thread: M14 Quantity: 2pcs Scope of Application: Marble, Granite and Other Stone Openings Package List 2 x Marble Hole Opener