Our 402 mm Concrete Core Drill Bit is engineered for heavy-duty and precision drilling in concrete, reinforced concrete (RCC), brick, stone, and masonry applications. Manufactured with premium-grade diamond segments and a robust steel body, this core drill bit delivers fast drilling speed, smooth cutting performance, and outstanding durability for demanding construction and industrial environments. Ideal for plumbing, electrical installations, HVAC systems, anchor fixing, and structural drilling work, it ensures accurate hole drilling with minimal vibration and stable operation. Suitable for both wet and dry drilling methods, the 402 mm core drill bit provides reliable performance and long service life for professional contractors and industrial users.