Features:* Diamond Drill Bits Tile Dry Drill Bits 6-14MM for Granite Marble Porcelain Stoneware * , and practical * * Imported emery, precise grinding technology, strong wear resistance, fast and efficient * Drying drill bit, no need to add water, with wax cooling, can cooling and lubricating bit, triangle handle anti-slip Specifications:* Suitable Device: Angle Grinder, Hand Drill* Application: Ceramic, Vitrified Tile, Marble, Granite and Other Materials* Optional Size: 6/8/10/12/14mm (Approx.) Package Contents:1*Drill BitsNote:1.The actual colors of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2.Please allow slight manual deviation of measurement for data.