Core Bits For Concrete - X300 - Concrete

Designed for HVAC installers drilling refrigerant line penetrations through structural concrete walls and floors, this X300 series core bit delivers consistent performance in standard concrete applications. The 4-1/4 inch diameter with .155 wall thickness provides the strength needed for repeated use on job sites while the 1 1/4-7 thread arbor connection ensures secure attachment to standard core drilling rigs. Diamond Vantage engineers this bit for contractors who need reliable penetrations without excessive tool wear. The X300 designation indicates a concrete-specific segment bond that matches the hardness requirements of typical residential and commercial pours. Built for mechanical contractors, plumbers, and electricians running daily penetration work in cured concrete.