12mm Diamond Hole Drill Bit Saw Bit for Marble/Ceramic/Glass/Granite

General Description This 12mm diamond saw drill bit is designed for drilling hard materials such as marble, ceramic, glass, and granite. Its metal and diamond construction ensures high durability and performance. With a gold coating, it is rust-resistant and provides a clean, smooth opening without chipping or wobbling. This drill bit is ideal for creating tap mounting holes in stone countertops and for plumbing pipes in showers and vanities. Technical Specifications Material: Metal and diamond Quantity: 1 piece Color: Gold Tool holder type: Triangular Cooling type: Internal cooling Cutting diameter: 5 mm Handle diameter: 6 mm Chip flute length: 1 mm Working length: 6 mm Overall length: 8.5 mm Angle at the top of the outer blade: 90° Size: 10-45 mm (10 mm / 12 mm / 16 mm / 18 mm / 20 mm / 22 mm / 25 mm / 30 mm / 35 mm / 45 mm) Usage To prolong the life of the drill bit, it is recommended to use it with water for cooling and lubrication. When using with a hand drill, start slowly at a 45-degree angle, then move to the vertical position after making an initial mark. Other information Package included: 1 x Diamond core drill