• 8-inch Max Wet & Dry Drilling: Adapts up to 8-inch drill bits. Our standup core drilling machine with stand can perform wet and dry two modes drilling, and you can feel assured of accuracy when boring holes in a variety of surfaces with a 8 in / 20 cm diameter hole capacity. Attention: a industrial-grade 4.25in core bit is only included.

• Capable Coring Efficiency: A 2500W powerful motor and 750RPM high-speed gearbox are intentionally taken to complete diversified drilling projects, allowing the operator to adjust based on the specific material being drilled. Max Drilling Depth: 23.62 in / 60 cm. Output Arbor Sizes: External Thread 1-1/4" x 7 UNC, Internal Thread 5/8" x 11 UNC.

• Expertly Designed for Security: Our diamond core drill rig integrates a secure clutch with an overload protection device to work by automatically tripping when the drill bit becomes stuck or encounters resistance beyond a certain level, further reducing the risk of operator damage and injury during the operations.

• Effortless Drilling: Our concrete core drill has a rustproof steel forged output shaft to bear more pressure, an upgraded one-touch water pipe connector for a stable water supply, and a thickened guide rail to stabilize the machine and reduce shaking.

• Built for Heavy-Duty Concrete Drilling: Easy to maneuver in drilling reinforced concrete, red brick, marble, and other materials. Our wet&dry diamond core drilling rig will surely meet professional demands and is for more than just home use, and you can quickly install air conditioners, kitchen pipes, stair railings, repair highways, etc.