1. Wet or Dry Drilling: Coring bit can be applied for both dry and wet drilling to suit your job needs. Start drilling from a vertical position and continue digging deeper.2. 5/811 Universal Thread: This coring bit has a 5/811 universal thread for easy and quick assembly to a standard fixed coring or handheld drill press. It is also suitable for use with a variety of devices.3. High Drilling Performance: Our coring bit has a clearance hole, highly regular serrations and a concentric shaft design. The nice design gives high drilling performance while maintaining a long service life.4. Corrosion Resistance: The coring bit is made of alloy steel and diamond with excellent craftsmanship, which has high hardness, wear and corrosion resistance.5. Wide Application: Our concrete coring bit is designed for drilling concrete, marble and other materials in conditions such as installation of pipes, stair railings, highways and airports.