Diamond core drill bit used for making precise holes in hard materials like concrete, stone, or asphalt. Diameter: The "Φ102" text indicates a diameter of 102mm. Application: Specifically engineered for cutting through aggregate, reinforced concrete, and abrasive rock formations. Technology: Features diamond segments, sometimes laser-welded, to enhance cutting performance and segment retention. Compatibility: Designed with a threaded connection (commonly UNC 1 1/4") to fit industrial drilling rigs or hand-held drills.