Description: <br>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. <br> <br> <br>Feature: <br>Paint on the body of this bit avoids getting rusty. <br>Opening neat and smooth, no broken edges, no shaking and chip easily. <br>Small incision resistance, drilling stably and will not break the border. <br>Mainly used for drilling ceramic tile, marble, granite, concrete and other hard material. <br>Ideal for drilling the faucet mounting holes in stone counter top. <br> <br> <br>Specifications: <br>Color: Gold <br>Size (optional): <br>6/8/10/14/16/18/20/22/25/30/35/50mm <br>0.24/0.31/0.39/0.55/0.63/0.71/0.79/0.87/0.98/1.18/1.37/1.96inch <br>Quantity: 1 <br>Size(mm) 6 8 10 14 16 18 20 22 25 30 35 50 <br>Shank Diameter(mm) 5-11 <br>Weight(g) 11 21 40 35 47 57 63 70 72 96 122 227 <br> <br> <br>Instruction: <br>1, To prolong its using life, better to use with water for cooling and lubrication. <br>2, The hole drill bit can be used with bench drill, hand electric drill. <br>3, When you using hand electric drill, start slowly at 45 degree angle and go vertical after you make an initial mark. <br> <br> <br>Package Includes: <br>1 x Diamond Drill Bit <br> <br> <br>Note: <br>1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. <br>2. There are two types of shank in different diameters and we will send in random. Please take the real one as standard.<br>1、Paint on the body of this bit avoids getting rusty <br>2、Opening neat and smooth, no broken edges, no shaking and chip easily <br>3、Small incision resistance, drilling stably and will not break the border <br>4、Mainly used for drilling ceramic tile, marble, granite, concrete and other hard material <br>5、Ideal for drilling the faucet mounting holes in stone counter top