
Premium Diamond Core Drill - Steel/Concrete Hole Enlargement. 40 Years Manufacturing Experience: Nearly 40 years of production experience in core drill bits. High Efficiency Cutting: Fast penetration with no slipping on reinforced concrete and stone. Extended Service Life: Service life increased by 3-5 times compared to ordinary drill bits. Smooth Hole Quality: Scientific chip removal groove ensures smooth walls without burrs. Wide Equipment Compatibility: Standardized interface compatible with most water drilling equipment. Global Export Coverage: Products exported to Americas, Europe, Middle East, Africa, and Oceania. High Customer Satisfaction: Over 95% of customers sign formal orders after testing samples. Customization Available: Product can be customized for specific applications and sizes.