Item Type: Diameter Core Drill Bit <br>Material: Alloy Steel, Diamond<br>1、Excellent Materials: This diamond core drill bit is composed of premium alloy steel components and excellent diamond abrasive grains, with 10.6in drill length, ensures longer core life. <br>2、Standard Thread: Featuring 5/8?11 universal thread, this core bit can be easily and quickly assembled to a standard fixed or hand held drill machine, which is applicable to various devices. <br>3、High Performance: The drill bit is designed with chip removal holes, highly regular saw teeth and concentric shaft, enables high drilling performance while maintaining a long service life. <br>4、Wet and Dry Drilling: Core drill is available for both dry and wet drilling to suit your job needs, a small amount of water can extend the lifespan. <br>5、Wide Usage: Can be used to drill concrete, red brick, marble and other materials when air conditioner installation, plumbing installation, stair railing installation, highway and airport, etc.Please allow slight size error due to manual measurement. Thanks for your understanding.1 x <br> <br>Diameter&nbsp;Core&nbsp;Drill&nbsp;Bit<p>1 x Positioning Drill&nbsp;Bit</p><p>1 x Hex Wrench</p><p>1 x&nbsp;Saw Blade</p><p>1 x Washer</p>