- **Powerful & Efficient Performance**: Equipped with a robust 1800W motor and dual-speed settings (1075 RPM/2300 RPM), this core drill ensures quick and efficient drilling. Capable of creating holes up to 8 inches (200 mm) with a 1/4-7 inch threaded output shaft, it's perfect for even the toughest projects. - **Exceptional Hole Precision**: Experience superior hole quality with our diamond core drilling machine, suitable for both wet and dry drilling. The wet drilling feature effectively flushes out debris and cools the bit, reducing dust and enhancing the smoothness of your holes—making it perfect for indoor renovations. - **Advanced Safety & Stability Features**: Designed with a built-in clutch that automatically halts the drill upon encountering hard resistance, ensuring your safety and preserving the tool's lifespan. Additionally, our innovative water-seal-free design eliminates common water seal failures, allowing for uninterrupted workflow. - **Durable & Lightweight Construction**: This core drill rig is constructed from a lightweight yet durable aluminum body that resists wear and minimizes operator fatigue. The reinforced PVC water hose is crack-resistant, and the steel output shaft guarantees consistent precision throughout your drilling tasks. - **Complete Professional Kit**: Fully equipped for your convenience, this concrete core drill comes with four high-quality drill bits (1 inch, 2 inches, 3 inches, 4 inches) capable of cutting through reinforced concrete, brick, marble, and more. It's your all-in-one solution for diverse drilling needs!