450/500mm Long 1-1/4''unc M22 Thread Laser Welded Wet Diamond Core Bit

450/500mm Long 1-1/4''unc M22 Thread Laser Welded Wet Diamond Core Bit. Premium Wet Drilling Performance Designed for fast and stable drilling in concrete and reinforced concrete. High Quality Diamond Segments Easy-start diamond crown and turret designed segments provide smooth cutting performance. Wide Application Range Suitable for concrete, reinforced concrete, brick and hard natural stone drilling. Professional Connection Design Available with 1-1/4" UNC ,1/2''BSP,M22,M14,M16 thread for professional diamond drilling machines. OEM & Custom Service Available Different diameters and lengths can be customized according to customer requirements.