Description Item Type: Rhinestone Drill BitMaterial: AdamasProduct Use: Can Be Used for Glass, Ceramic Tiles, Stone, Floor Tiles, Marble and Other MaterialsLength: Approx. 65mm / 2.59inHole Diameter: Approx. 25mm / 0.98inShank Shape: Triangular1This rhinestone drill bit is made from quality adamas material, which is sturdy and durable for long service life. 2This rhinestone coated core drill bit removes a complete circle from glass, marble, tiles, granite, ceramic or other. 3The rhinestone hole saw creates a high accuracy, smooth cut with no broken edges, low resistance. 4Large torsion and high bearing capacity effectively prevent slippage, more stable clamping, not easy to break the handle, and improve work efficiency. 5Special opening design with low cutting resistance, large chip removal port design for especially conducive to chip removal.1 xRhinestone Drill Bit