Core Bits For Concrete - X300 - Concrete

Designed for HVAC installers boring vent holes through poured foundation walls and floor slabs, this 4-1/2 inch X300 series core bit handles cured concrete with a .155-inch segment thickness that balances cutting speed with extended service life. The 1 1/4-7 arbor fits standard concrete drilling rigs used on commercial and residential job sites. Diamond Vantage engineers this bit for consistent performance in medium to hard aggregate mixes where clean, round penetrations matter. The X300 designation indicates a construction-grade diamond matrix that holds up through multiple pours without significant diameter loss. Built for concrete drillers and mechanical contractors running daily core drilling operations.