Features Superior Paint Coating: The innovative paint on the body of this bit prevents slippage, ensuring precise drilling every time Clean and Smooth Cuts: Enjoy neat openings with no broken edges, as this tool minimizes shaking and reduces chipping during use Stable Drilling Performance: Experience enhanced stability with small incision resistance, designed to prevent border breakage while drilling Versatile Application: This tool is perfect for drilling through tough materials like ceramic tile, marble, granite, and concrete for various projects Ideal for Faucet Installations: Specifically designed to create perfect mounting holes in stone countertops, making your plumbing projects easier and more efficient Features: 1、Paint on the body of this bit avoids getting y 2、Opening neat and smooth, no broken edges, no shaking and chip easily 3、Small incision resistance, drilling stably and will not break the border 4、Mainly used for drilling ceramic tile, marble, granite, concrete and other hard material 5、Ideal for drilling the faucet mounting holes in stone counter top Specification: Description: These drill bits are cutting tools used to remove material to create holes of circular cross-section.There are many sizes for your choice and can create different kinds of holes in many different materials. Attached to a drill which powers them to cut through the workpiece by rotation. Feature: Paint on the body of this bit avoids getting y. Opening neat and smooth, no broken edges, no shaking and chip easily. Small incision resistance, drilling stably and will not break the border. Mainly used for drilling ceramic tile, marble, granite, concrete and other hard material. Ideal for drilling the faucet mounting holes in stone counter top. Specification: Color: Gold Size (optional): 6/8/10/14/16/18/20/22/25/30/35/50mm 0.24/0.31/0.39/0.55/0.63/0.71/0.79/0.87/0.98/1.18/1.37/1.96inch Quantity: 1 Size(mm)227 Instruction: 1, To prolong its using life, better to use with water for cooling and lubrication. 2, The hole drill bit can be used with bench drill, hand electric drill. 3, When you using hand electric drill, start slowly at 45 degree angle and go vertical after you make an initial mark. Package Includes: 1 x Diamond Drill Bit Note: 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. 2. There are two types of shank in different diameters and we will send in random. Please take the real one as standard. Package List