High Quality Laser Welded Mesh Segment Core Drill Bit for Concrete Drilling. Laser Welded Construction: Features laser welded diamond segments for consistent fast cutting and smooth running. High Steel Reinforcement: Ideal for processing reinforced concrete with high steel content and abrasive materials. Wide Diameter Range: Available in diameters from 12mm to 600mm to suit various drilling needs. Long Service Life: Developed for long life with fast starting cut and maximum performance. Versatile Applications: Suitable for light and heavy duty drilling in exposed aggregate and precast concrete. Customization Available: Customization from samples is supported for specific requirements. Quality Assurance: 100% visual inspection of finished products ensures high quality standards. Professional Support: Backed by DOWELL TECHNOLOGY for safe, high-quality construction tools.