
Large Diameter Premium Wet Diamond Core Drill Bit, Durable Water Cooled Core Drill Tool for Engineering Construction and Professional Drilling Work. Wide Diameter Range: Available in diameters from 18mm to 500mm for diverse drilling needs. Customizable Design: Working length, segment height, and tooth profile are fully customizable. Universal Thread: Compatible with various machines via 1-1/4' UNC threaded options. High Durability: Premium diamond segments with heavy-duty steel body for long service life. Wet & Dry Options: Wet drilling for reinforced concrete; dry drilling for non-reinforced masonry. OEM & ODM Service: Custom logo, packaging, and specifications available for bulk orders. Professional Manufacturer: Established in 2009 with strict QC and advanced manufacturing equipment. Global Support: 24/7 technical assistance, spare parts supply, and optional extended warranty.