
Big Size Wet Diamond Core Drill Bit with Long Working Life, Professional Water Cooled Large Bore Core Drill for Multiple Drilling Scenarios. Wide Size Range: Diameter available from 18mm to 500mm for various drilling needs. Customizable Design: Working length, segment height, and tooth profile can be customized. Universal Thread Options: Compatible with various drilling machines featuring 1-1/4" UNC thread. High Durability: Premium diamond segments with reinforced steel body ensure long service life. OEM & ODM Service: Custom logo, packaging, and specifications available upon request. 12 Months Warranty: Standard warranty coverage with optional extended coverage up to 36 months. 24/7 Global Support: Technical assistance and spare parts supply available around the clock. Versatile Application: Suitable for reinforced concrete, masonry, wall opening, and pipeline drilling.