76mm Diamond Core Drilling Bit. YINJIAHONG professional diamond core drill bit. Designed for drilling holes in hard materials such as concrete, masonry, stone, and asphalt. The diameter is 3 inches 76mm.
Technology: Features diamond-impregnated segments for efficient cutting and durability, often used with water for cooling and lubrication during the drilling process. Application: These tools are commonly used in construction and professional trade applications for creating precise, cylindrical holes.